I'm currently taking Lo Loestrin(this is my first time on birth control, which means that this is my first time on hormones) and I took the pills for three weeks before having sex with my boyfriend. I take the pills at the same time everyday(give or take 5 minutes because I am at work during my selected time). It was unprotected but he did not ejaculate inside of me. So far, its been a little over a week and I have been constipated and experienced break through bleeding. The side effects that I'm feeling are known side effects of the birth control and signs of pregnancy. So I guess my question is... Is it the hormones that are causing the symptoms or could I be pregnant? Any advice is a major help. Thank you.