You don't seem to be right now, but she did say by the time you wake up, so if you assume an hour equals roughly a month then it would be a few hours before anything of your pregnancy would show. Still you drift off to sleep none the less.
A contraction jolts you from your sleep, and you immediately notice your round belly, clearly ready to burst. You have little time to react before your water breaks and you begin birth the child you fathered. Though you couldn't help but fear pain, you were only greeted by immense pleasure. A series of orgasms rocking through you body, and by the time they stop you realize your baby was laying between your legs. Overcome with maternal bliss you feel the urge to nurse her. Scooping it up, you examine her as you begin feeding it. her skin is a very striking shade of crimson with amber eyes. Her fingers are long and claw-like, while her foot is more or less human, excluding the claws for nails. And her inhuman features only get more obvious. She has a long tail, and a set of curved horns that seem to be growing... Actually her whole body seems to be growing as she suckles.
Spoiler (click to show/hide):
Random person in the comments section of a random hentai manga- "Now I am ashamed of myself."
Me- "Posh, shame is for fools and people with friends... we need no such things, we have the internet."