Opinions ? Please help, very frustrated.

Taelor
So I take birth control but for 2 months I've been taking it at different times which I know decreases the affect. Well me and my boyfriend had unprotected sex 2 times the night before my period (my period started July 5th, we had sex July 4th) and he came inside of me both times. Then the next morning (the day I started my period) we had sex and he came inside of me. 2-3 weeks after that I've noticed I've had almost every symptom of pregnancy. (I know I should take a test but I'm waiting) But on the 29th of July I started bleeding, it wasn't a lot, it was brownish with a tiny of dark red and lasted 2 days. But I'm not supposed to be on my period. What does this mean ? Could I possibly be pregnant ? Any opinions ?