"You are staying inside." the nurse announces. "I don't want you doing anything that might endanger my grandchild."

"Grandchild? But how can that be?"

"The normal way." Casandra laughs. "You had sex with my little boy and got pregnant."

Your protests are ignored. "Yes, you are pregnant, and with my grandchild. To give her the best start, you are going to stay in my womb until she is ready to be born. Just relax and get used to it." With that, she ceases to pay any attention to you.

Things become dull and you pass time mostly sleeping. But eventually something happens. You feel the nurse moving you around until your face is looking at the birth canal. Is she about to let you out?
Apparently not. Instead a set of feet get in your face. It would seem the nurse is unbirthing some woman ... who tastes very good ...
Quickly you open your mouth and swallow these tasty feet, and more of the lass as Cassandra continues to unbirth her.

You hear a yell "Hey, somebody in there is eating me."

"That's right dear." The nurse confirms. "You are going to be food for my grandchild."

The victim protests, but she is ignored by both you and the nurse. She continues to slide into your mouth, and your belly. No doubt she is fighting hard, but you can not feel that in here. You do feel her climax as you swallow her hips, and again as her taunt breasts are wedged into your throat. She continues to climax as the rest of her is forced into your belly, where she makes a very pleasant bulge. Actually she tries to be unpleasant, but you ignore her language and settle down for another nice nap.
You wake to find her pretty much digested and the dull routine continues, until the nurse again shifts you so your mouth is ready to accept whoever is coming in. This time it is a girl, face first, which only makes a difference in that she gets no chance to make much verbal protest as she is shoved into your mouth, and then to your stomach where she can be converted into calories. Some time after she has been stored as your body fat, you start the same procedure again, only to find it is a boy this time. It doesn't make much difference. He is easy food and you delight in your meal.

This happens several more times, tho you have long lost any idea of how much time has passed. You have realized that the nurse was right about you being pregnant. Your belly almost looks like you didn't digest your last victim. Maybe this means you have been in here for nine months.
This idea gets some confirmation when you feel the nurse once again moving you into position. But this time, she is not getting you ready for an incoming meal. Instead, you are going out. Suddenly you can see light for the first time in ...well, a very long time.
You can also see you are quite pregnant, and feel it too, as the first pains of birth hit you. Cassandra hustles you only some sort of machinery which seems to have the purpose of making birth easier. You are not sure if it works. The whole process seems quite painful as you feel your innards swell and stretch.

The nurse is not sympathetic to your distress. "You're lucky you're a vore. For a normal woman this would take hours instead of minutes." The minutes seem all too long to you, but you feel somebody coming out of you inch by inch. Then Cassandra is steadying somebody, whom she introduces as "Behold your daughter and my Grandchild."

You protest "But she is as old as I am." But even as you say it, you feel motherly towards this huge child of yours, and know you will do what you can to help her.

"Vores can give birth to adults if they want, and if she stays here, as she has to, she won't survive as a baby. So I made sure she would be as grown up as you could manage. But now she needs her first meal, and you get the privilege of providing it."

Your response is an automatic "Sure" even as you realize this is going to be a vore meal of some kind.