Lately I've been really stressed out with having to past a state exam to graduate and finals now. My boyfriend and I had not had sex in over 3 months and we finally had sex 1 1/2 ago with a condom and he didn't cum in me at all. He finished by jacking off and finally cummed 5 minutes later. My period never comes on exact time but it's now 3 days late. I'm scared... Could I be pregnant?