Hi. Me and the hubby are trying to conceive and I'm fairly new at tracking my cycle. I'm on bc that is a 28 day cycle. I stopped taking the bc after the 3rd pill on the first week (02/11/15). We had sex on the 4th day (02/12/25 - missed 1 pill). After a couple of days, I got breakthrough bleeding and it was heavy with a lot of clots. Had sex again after it stopped bleeding, which lasted 3 days. My question is: is there a chance I could be pregnant or did the breakthrough bleeding affect the chances?