Egg

You feel around your mother's womb, the lining is spongy and warm, kind of inviting. You lay down, the lining acting like a mattress. Climbing inside your mother's vagina had made you very horny. Your cock was rock hard, your pussy wet. You reached down and began playing with yourself. It seemed your mother had the same idea. You felt a rhythmical movement of your mother's body as she seemed to be grinding on something. You took up this rhythm, grinding your cock into the spongy lining, your hand reaching back to play with your clit as you did. You could hear moans from your mother along with a rapid heartbeat and fast breaths.

You begin to moan and you feel the rest of your body becoming numb as all your focus was on your genitals. With a growl, you release your built-up, cumming into the lining of your mother's womb from both your cock and your pussy. You flop onto your belly and recover in your afterglow. When you recover, you look around, things were bigger, no you were smaller. The process was rapid, you shrank and shrank 10cm, 8cm, 5cm 2cm, 1cm. You then became younger, breast receding, pubic hair falling out, your cock and balls shrank and became imature, the hair on your head fell out, your teeth fell out. You were a tiny baby, your brain went fuzzy but never completely blank. You entered a dream-like state. Your body regressed even further until all that was left was an egg cell.

When Martha came round from her afterglow she noticed she could no longer feel her daughter inside of her. She guessed what had happened and noted it down before continuing with her day.