Hi. I got my bfp when af was 10 days late. My last period was 6.5 weeks ago but we only BD'd once this month so I know exactly when I conceived. This was towards the end of my cycle, I ovulated late due to breastfeeding. This was 2.5 weeks ago. Would my due date still go off the first day of my last period? Or do I add on two weeks from date of conception which would make me 4.5 weeks rather than 6.5 weeks which would make more sense with only just getting my bfp now. Just don't know what to tell the doctors when I ring to arrange my booking in appointment. Thanks