Early spotting on the pill.

Patient: I am 19 years old and am currently on Aviane the generic version of Alesse birth control. I’ve been on birth control for about 7 months and have never had any problems up until now. I take the pill regularly between 10 and 11 pm everyday and have not missed one pill this month. However, my period started about 3 days before I’m about to start my sugar pills. Right now it’s minimal spotting, but I am just a little worried that there might be something wrong. I have started exercising, but I don’t know if that would cause me to start early. The last time I had sex was a month ago, and I’ve gotten my period since then, so there’s no way it’s pregnancy.