So i'm currently 18 weeks and 4 days and so worried. Before me and my boyfriend got together him and his ex had sex around like March 22nd and she had sex with another dude around April 4th or 5th. She ended up getting pregnant and they gave her a due date of January 4th 2021 and conception date of March 30th because that was her lmp. At first she automatically said the baby was my boyfriends and there was no way it could be the other dudes then a few months later she said the dates didn't add up and she wasn't sure. I've been stressing about this since I got pregnant and getting more stressed by the day since her due date is so close I really don't want it to be his because we have a babygirl on the way and that is just to much stress on me and she has already tried to get him back was texting him she misses him and calling him at 1 o'clock in the morning when she knows we are together she is just disrespectful and we don't need that especially now!! He will be doing a blood test the baby is born but what is the chance that it could be his ?