I'm 27 wks.pregnant and worried about who my baby's dad is. So far everything points out to the baby being my current bf's. I had an u/s at 15 wks && another one at 19 wks. They both have measured me only 5 days further along. My Last period was 03/9/12 (I missed my period in February which was due around the 21St).I have irregular periods so didn't pay too much mind to it. I was With the ex only 02/10 & 02/13...I took a test after I was with my ex around 19 days later && it came negative then I had a light period in March. My due date is 12/14/12 && 12/9/12 by u/s. I got measured for my fundal height at 24 wks && the doctor said I was measuring at 24.5 cm which was on point. Should I stop worrying about my ex being the father? Please help. I think it's my bf's because my wks add up but I'm still worried. Help!