Sorry if this is long. I have a feeling I may be pregnant. I have been on birth control pills for a while to be more specific ortho tricyclen lo. Then I got very busy and could not get a hold of my doctor for weeks, so I went without my pills for a little while. On my first week of being back on my pills, me and my husband had unprotected sex a few times. I got my period on the 4th of July, that only lasted 2 days. Then on the 14th a week later I got a second period lasting 3 days. I was thinking these may be side effects from getting back on birth control pills. But I have been having mild back pain, nauseous. And my breasts seem fuller and hurt on and off. I haven't told my husband, I don't want to make him worry over something that may be nothing. Has anyone ever gotten pregnant while on birth control pills? Any advice would be appreciated Thanks.