I had a one night stand with a guy on Oct. 16th, 2015 and got my period Oct. 23rd, 2015. After that day and ever since I have been having unprotected sex with my boyfriend, basically every day. I found out I was pregnant and my due date is July 29th, 2016. According to conception calculators, I conceived anytime between November 2-11. I've already had 2 ultrasounds and they both confirm my due date being July 29th. I just want to be sure my baby is my boyfriends. I'm over thinking too much.