Bleeding while on Birth control

Joia
Okay so I just recently started this birth control called "Yasmin" it's a pill you take every day, at the same time.. everyday. Well I've been on it for a week and four days. I have had sex twice since I started it and both times I have bled afterwards. I never had this problem before starting the pill, and I have always been with the same guy. So I'm not sure what's going on. Has this happened to any of you, if so what did you do? I emailed my doctor today and am waiting to hear back from her.