A peaceful sunny day in the Ponyville. There is a pink mare named Love Nest lives in the town. She is a pony with a rose red mane, wearing an unique pin on her hair. The pin is not a normal but a magic accessory that displays her mood. When she is happy, the pin becomes a smiley, when she is sad, it becomes sad face. You could just see her emotion by observing her magical pin. She is a married mare, and her husband travelled to Las Pegasus for his business. Unfortunately, due to Love Nest's infertility, they have no kids. She was really upset when she heard the bad news from doctor in local Ponyville hospital. Having a child became an impossible dream for her, a wish that will never come true. When she walked in a park, she could only watch foals played and laughed together in the park playground, and then walked away with despair.
As usual, after she walked by the park, was recalling what are those foals were playing, soon or later she arrived and stood in front of the door of grocery store. She went in and brought some fruits and vegetable to prepare her lunch, and imagining what was it feel if she had a twin in her belly. She touched her flat abdomen, nothing was there. She was disappointed, took an apple from fruit shelf, went to checkout counter. After she paid, she put the items into her saddle bag, walked to the shop entrance with a frown headgear on her hair.
When the door was opened, she noticed a paper ads on the floor. It was a request from a researcher, an experiment needs a volunteer to test its effect. Before she dismissed it, the effect of the experiment caught her attention. She quickly read the entire details about the experiment. She knew it was the effect she ever wanted, an effect that was able cure infertility. Without any doubt to the experiment, she made up her mind to give it a try.
Not long after she is informed from the paper ad, she paid a visit to the researcher's house, she knocked the door, was hoping that the researcher could give her a chance to try the experiment. No, the researcher must accept her! It was something impossible became possible, it's a glimmer of hope! A chance she might have a foal, she was not going to miss it.
A moment later, a coffee coat mare with a pretty red mane, wore a big orange gem necklace, opened the door. By her appearance, Love Nest knew she had to be the researcher, but this mare looked like something different from the ads, it was a mare in her 6-month pregnancy, and something was kicking inside of her as the bulges partly hidden and partly visible on her belly surface.
"Umm… May I help you? Miss?" the researcher looked at Love Nest.
"Oh, h-hi. Uhm, sorry. I was… uhm... you see... uh, distracted by something..." Love Nest came to herself, randomly responded some words to the researcher.
"What something?" the researcher looked confused.
"Oh uh. Nothing! Anyway, uhm. I-I'm Love Nest. I was wondering if you could let me participate in your experiment..."
"I'm Antique, the special creature researcher. Come in, I need to check your body before you jumped into this experiment."
"Okay. Thanks."
Both mares walked into the house. Love Nest found a very grotesque scene in front of her. There was several jellyfish-like creature and blobs of slime with its black core inside of it, were roaming in this room. A jellyfish-like creature waved its tentacles at them, just like a pet saying hello to them. Oddly enough, they were emitting a fragrances.
"Oh my Celestia, what are these creatures?!" She screamed.
"Stop screaming, you will scare them. Don't worry, they won't attack you." Antique guided her and asked her sat down on a chair. Antique had her gloves wore on.
"Now this will be a little embarrassing. Please open your thighs."
Love Nest blushed, her face was so red like a big red apple, but she knew she had to. She opened her thighs slowly. As Antique's orange gem on her necklace started glowing, she gently touched Love Nest's private part, was checking if she was okay with the experiment. While Antique caressed her marehood with her soft, frail hoof, Love Nest couldn't help but felt a little pleasure from her touches.
"Good, you are the best pony I ever needed. You can be my volunteer for this experiment." She seemed excited.
"...huh? Are we fini- Uhm, I mean, really? So what I'm going to do now?"
"There, did you see a green jellyfish-like creature? Try to ask it to take you as a host."
"What do you mean take me as a host?" Love Nest was confused.
"It's a symbiotic creature, then you will know what is a host for."
"W-WHAT? B-But it didn't write on your paper ads."
"Of course, nopony would come if I wrote all details. But hey, you want the effect from the experiment, don't you?"
"Sheesh… fine." Love Nest impatiently answered Antique. She walked to the green jellyfish-like creature, asked it if the creature could take her as a host. The creature seemed have some response, it slid itself to her, drew its tentacles out, tied up Love Nest's hooves. She fell on the ground, had a surprised expression on her face.
"Ouch! Wait! I know I'm expecting what are you going to do, but you surely don't have to tie me up." This time the creature didn't give her a response, yet it waved its tentacle near her entrance.
"This… is just not right…" Love Nest looked at Antique, blushed as Antique looked at her.
"No worries, nopony will see it... Well, except me."
"T-This is not a joke. J-Just gave me a p-private space, ok?" Love Nest's face turned so red.
"I'm sorry, but it's an experiment, I can't leave without seeing the result."
"Grrr… F-Fine!"
Love Nest felt very uneasy as her was sexing with the creature, but on the other hoof, the feel was good while the tentacles stroked on her marehood touch by touch. The pleasure were rising in her mind while the pressure on her soft entrance given by the tentacles, she couldn't help herself but moaned. As she enjoyed the tentacles, she heard a sound was giggling at her.
"S-stop laughing at me. I will get you after I finished this experi--"
At a sudden, a tentacle thrust into Love Nest. A loud moan came from her. The creature pushed with its tentacles, pressed against her inner walls, was pounding in and out of her. This unexpected movement gave her a great pleasure, her mind flooded with the eager of sex. She was not merely hoping it stop but also wanted more of it. As the tentacles slid deeper and deeper, she could feel the barrier was breached as the tentacle pushed into her deepest marehood.
After the creature broke into her precious chamber, she was shocked at what it is doing to her, several egg-sized bulges appeared on the tentacle. The warm liquid leaked out of her entrance, it was the green jellyfish creature producing its semen and pouring into her. Just like a water pump, it pushed its semen into her womb. She watched her belly slowly expanded as the creature poured. As litre after litre of creature's fluid flowed inside of her narrow canal, her belly was getting bigger and bigger, the pressure and fullness were also raised on her abdomen, filled with the green jellyfish's semen. She thought she was reached her limit, her belly just looked like it held a foal, she's no different than a mare at 10 months pregnant by her looking.
"S-So… big… are you sure it is fine?" Love Nest was worried.
"Totally fine. Next stage is coming up."
Although Love Nest thought she cannot take much liquids anymore, she could do nothing but trusted the experiment. While her belly was getting swelled up, she felt she might be exploded and died if the creature didn't stop filling her into a giant water balloon. Several terror scene came up her mind, she just cannot get rid of these worries.
As soon as the bulges on the jellyfish's tentacle disappeared. the tentacles, except the one in her womb, were pulled back, and the creature shrank a little. Love Nest felt relieved after it untied her. An idea told her it's over.
But it didn't think so.
After the creature drew back its tentacles, it soon returned to Love Nest and put a bunch of tentacles into Love Nest's precious part. This reckless action caused her moaned out loud. Her entrance stretched and caused a few semen flow out, but her belly size wasn't decreasing, it was opposite. Instead of worrying about it, she found it felt so wonderful. She couldn't think anything since the pleasure occupied her mind. It was no doubt she was in climax, and too busy to look what the jellyfish was doing to her.
The creature shrank itself again, tried to push itself deeper. It felt like a fish had a clear goal, used all its strength swam the channel. The jellyfish's body attached to her marehood, as all of its tentacles are inside of her channel. It stuck on her, and kept using its tentacles press her walls. The sensation was so intense, she just enjoyed every thrusts from these tentacles.
Finally, she gave the last loud moan. The green jellyfish gave its final push, slid into her body. Her stretched hole was relaxed at last, and closed as the creature made its way into her deepest marehood. Her belly was distended. She became so huge like she was pregnant with triplet, a mare carried a beach ball in her abdomen. The tension was very strong from her gigantic womb. Her eyes already glazed over. She was unable to think anything but enjoyed every moment of it. Several bulges appeared on the surface of her huge belly, partly hidden and partly visible. It was wiggling in her belly, tending its new home and live in, and trying to find a good position to settle down. Love Nest, An exhausted pink mare, closed her eyes, lay on the ground and lost her consciousness.
A beautiful sunny day, the sunlight awoke Love Nest. She found herself laying on a big patch of cloud in a blue sky, saw several fillies and colts playing around, each of them have a happy smile on their faces. She felt happy as they were playing with each other, but also had a sad feeling came up.
As the mare looked at the children, she noticed something was not right. An earth pony is not supposed to be on the cloud. She was shocked, tried to stand up and ran in panic. Suddenly she saw a pair of wings on her both sides.
"Pink wings? This can't be… Am I a pegasi now?" She tried her wings. It was unbelievable that she could easily fly with them on the sky, it was very relaxing. With this pair of wings, she could do it all day. She looked at those pegasus fillies and colts, wanted to fly to the cloud where those children were playing around. But before she reached the cloud, a sudden feeling from her belly stopped her.
She quickly landed on nearest cloud, struggled with her sudden pain. It was a severe pain from her belly. She curled herself up on the cloud, suffered. But just a moment later, the pain was disappeared. Without a clue of what was going on here, she lay on the cloud without a single movement. After Love Nest was certain that the pain was completely gone. She sat up and tried to figure out this mysterious situation she was in. She also watched her flat abdomen and saw nothing on it.
While Love Nest was thinking about what happened to her, she heard children's laughing sound. The sound was coming closer and closer. She looked the sky and saw those children flew and landed near her, sat around Love Nest. A filly came near her, with a peaceful smile, touched her belly. The filly was rubbing Love Nest's belly, it was strangely comfortable and enjoyable, but she didn't doubt about it. She felt pleased and lay on the cloud.
The filly saw Love Nest lay down, gave a nod to other children. Later, she magically became a transparent little pony, just like a spirit, disappeared in her belly. Love Nest's flat abdomen started growing and expanding.
Love Nest noticed the situation and she quickly put her hooves on her belly, tried to suppress the expansion without a hesitation. But no matter what she did, she couldn't stop her enlarged belly. She felt shocked and panic. She drop a tear, was trying very hard to stop the expansion, but her belly still became bigger and bigger.
Her belly finally ended up distended and swollen like a pregnant pony. She watched the children around her, gave them a sad and terrified face. A few of them came to her and gave a smile face like last filly, were rubbing her belly. Unlike last time, her belly was swelling up again while they were rubbing her big belly. Love Nest was trying to stop them but found out her hooves went through them. She was helpless and powerless, kept waving her hooves and trying to hit them.
Soon she gave a loud moan when her abdomen enlarged like a beach ball, just like a mare pregnant with triplet. It might be more than that if the enlargement didn't stop. For a normal mare lives in Equestria, it was so intense to have her belly bloated up in this way. Love Nest can't help but screamed.
"Arrrrrgh! STOOO--"
~~~~
"—OOOOOP!!"
"Oh my oh my, calm down. Ms Nest." A familiar voice was near her ear.
"Oh… it's you, Antique. I just had a bad dream… My abdomen... my bel— Gah!" She just found out she was laying on the bed, had a huge belly like a beach ball still.
"Ugh! I-I just remembered, that creature… Is it... I-Inside of me?"
"You tell me. Look at your belly, did you notice those bulges on your belly?" Antique put her hoof on her belly, told her the creature was already inside of her.
"So I'm a host now? That green jellyfish creature is wiggling inside of me…" Love Nest watched her huge belly as the creature kicked and squirmed. It looks just like a mare pregnant with an alien, as if the alien was going to burst out of her belly, ripping her apart. Such a terrible scene came to her mind, her hooves started trembling, the sweat broke out on her backbone.
"W-will I d-die from this…?"
"What are you talking about? Of course not." Antique said. "You're too anxious, here, drink a cup of water."
"T-thanks. Um… Antique? W-When can I go home?" She asked the researcher, hoped that the experiment could be over soon.
"Oh, you have to stay here for a moment, with such huge belly you cannot go anywhere."
"H-how long am I going to stay here?"
"Actually, you should vent the creature's fluid any second now."
While Love Nest was thinking what the researcher was talking about, a feeling came from her womb.
"Maybe… now?"
Just like a faucet on full, Love Nest vented litres of liquid from her vagina. She saw her belly was deflating, the size from a beach ball to a watermelon. It was getting smaller and smaller. Love Nest awared that she was still lay on the bed, she knew she just wet it.
"Oh I'm sorry I didn't mean to--"
"Not at all, it's quite normal. Now your belly has returned to its proper size. You can go home now. Remember to come back after a week."
"Proper size? It still looks like I'm pregnant for 3-4 months. I didn't see the creature come out yet."
"The creature will stay inside of you for a week, the experiment is only finished when it grows to a size and comes out."
"So… I have to carry it for a week? That's… weird." Love Nest blushed again, feared somepony would know what she was doing. But to achieve what she wanted, she asked Antique for further details, wrote them down on a note. Love Nest gave the researcher thanks and a farewell.
~~~~
A week later, in a late night, Love Nest, who was wearing pajamas with blues stripes, walked into her bedroom. Her pajamas was looking very tight, for she was having a big belly. It's no doubt she was pregnant for 10 months by her looking. She sat in front of her dressing table, removed her accessories. After carried her big belly all day. Love Nest yawned, walked to her bed and tried to get some sleep.
"I hope it wasn't a bad idea." Love Nest murmured on the bed, was watching the ceiling. She was a bit worried, and put her hoof on her huge belly. She was recalling what happened last week.
"My abdomen is still inflated like a balloon… it's only a week and it looks like I'm already in 10-month pregnancy." She put her hoof on her belly, murmured on the bed. She can hear the clock ticks loudly, and bugs' sound from outside. She lay on the bed for hours and cannot fall asleep. She woke up from her bed, tried to walk to the bathroom, a suddenly pain came from her womb. She sat on the ground, the floor was wet, it was same fluid she saw last week, she knew she is going to give the birth to the creature now.
A jellyfish head soon appeared at her entrance, made its way out of her body. It also pulled its tentacles behind, tried to pull them out from her. At the same time Love Nest was pushing the creature, using her full strength to get rid of it. As it pulled the last tentacle out of her, she knew she finally completed the experiment, she was all of a muck of sweat, lay on the floor. Out of strength to catch the creature, Love Nest watched the creature ran to the bedroom door and escaped. But thanks to Celestia, all doors and windows in the house were closed. It also left the trace of its semen on the ground. She knew she would find it and return to Antique.
Love Nest took a deep breath and stood up, tried to look for the creature. Again a feeling from her lower body, it's a pain she haven't been experienced for a long time. She quickly ran into bathroom and vent, she noticed some blood in the toilet. Love Nest was surprised, realized that it was a successful experiment, acquired the cure she ever wanted at last.
"Oh my Celestia! Thanks Antique and her creature… infertility is no longer a problem for me now!" Love Nest talked to herself happily. She was very excited and ecstatic. She wanted to share this good news with her husband, who traveled to Las Pegasus for his business. Without hesitation, she ran outside to local train station and left her house door open, and a forgotten jellyfish appeared at the door, found its way back to the researcher's house.
