I am on the pill so I usually start the same day every month. (The Wednesday after my last pill) today is wednesday and i havent started yet. My boyfriend and I have only had sex once this month and we used a condom with spermicide (and remember im on the pill), so I dont think I could be pregnant. I am a freshman at college and have been stressing out over making good grades. Could it just be stress or should i be worried about pregnancy? Does stress still come into effect your period even if you on the pill?