Birthdays, Boundaries And Babies

i turned 18 yesterday.

For the past year, I've overheard my parents arguing. Mom wants another baby and they have been trying. She, always diligent, got a clean bill of health from her doctor. Dad is too proud to get his sperm tested.

Mom looks younger than her 42 years. Big tits and curvy in all the right places. I know it's wrong, but I get turned on around her.

I've respected boundaries until now, but with Dad likely infertile, Mom's biological clock ticking away, and me jerking off constantly, should I make a move?

Are there other sons or stepsons who have done it? How did you and your mom keep the secret? Did your relationship change? If it turned out to be more than just sex, are you still in love after making a baby?

It's a lot for me to grapple with at my age. I'm an open book but this is something I can't just talk to people about. Help!