I am supposed to get my period next wednesday or thursday. I am on birth control and have been taking it as directed. I have been a lot more stressed than usual this month. I also had sex February 1st while on the pill however without a condom; he pulled out. I am wondering if there is a chance I am pregnant or if I am having an early period due to stress. I did take a pregnancy test today that said 'not pregnant'. Should I continue the rest of my pills this week? It appears to look like old blood; brown discharge.