Closest thing to that might be Spider girl who will probably do abdomen vore for one of her scenes.
Viewing post in Amelia's Stranded Adventure comments
How will the situation with Spider-Girl's womb be? Will it be possible for Amelia to get out of it whenever she wants, or will Spider-Girl release her at will? Or are you going for a more realistic approach by adding elements like the uterine membrane and mucus plug, meaning Amelia will have to wait until she's 'born' to get out?