I chickened out the first time, and twice after that. Then I had my period and didn't think about it for a few days. Then I came home after shopping and found him at my computer with a pair of my panties jerking off to my sexy files. I told him that it was alright and that he should stop jerking off. I said that when he had the need, just use me. He had no trouble mounting me the first time.
I figured two or three times a day through my fertile period would do it. Since he never does less than five not to mention those weekend marathon sessions, I underestimated him by a lot. I missed my last period and the home test confirmed my pregnancy. I'm estimating a due date around April 21st. Part of me is saying that I've ruined my life but right now all I can think of is how sexy this all is.