Thinking about parasite pregnancy. A baby tentacle monster that crawls inside you and forces its way into your womb, it hurts for a while as your cervix is forced open but the creature is small and fast making it nearly impossible to pull out. The monster growing steadily filling your womb until it reaches adulthood, feeding off your fluids and sexual partner’s cum. Leaving its host looking five months pregnant. The parasite making you more horny and eager to bend over for anyone when it’s hungry. Every 3 months it lays its own clutch of eggs inside your womb, they incubate for a few weeks before hatching sending you into labor with the baby monsters. But the parasite itself is too big to give birth too, only its off spring crawling out of your laboring hole