Could I Be Pregnant?

I've been on birth control for about 7 months now. I've never messed up my pills. Until recently. Last Wednesday was the last day I took one of my pills. I had sex on Tgursday & he did cum in me. And again on Friday. About 15 minutes after we were done on Friday I started my period. Could I still be pregnant? Should I wait and take a test in a few weeks or should I not be worried about it?

If your period started then you aren't pregnant. You can have spotting when pregnant but never a full on period unless something is really wrong like a miscarriage. And missing one day of birth control can cause a pregnancy, but not often. Sid you take two the next day like you were supposed to? That's supposed to offset it.