What are the odds of being pregnant while on birth control and having had regular periods? I had sex once on October 12 and used a condom + I'm on birth control. Then I had sex 7 times from 11/11 - 11/12 without a condom but I was still on birth control. I had my regular period in October, November and December. I highly doubt I am pregnant but I was just wondering if you think there's a chance? I've gained about 5 pounds since October (although I ate a lot and drank a lot during the holidays and didn't watch what I was eating at all) and sometimes my stomach feels a little queasy. I do have a lot of anxiety in general so maybe I'm just making myself worse by freaking about about possibly being pregnant?View Thread