Debte

So, hubby and I were trying to figure out when we conceived. I showed him a calculator I used to determine when it would have relatively been based off of the DD the OB gave us at our first ultrasound appointment last year. He says that the week of Oct 11 didn’t make sense to him, and I pointed out that that was a long time ago. He wouldn’t necessarily remember the exact day (he is really bad with days). He keeps saying it was September on his birthday.

Is there any way that being due on July 9th would have a possibility of conceiving in September? I didn’t think there was, but maybe I’m missing something?