Am I pregnant? Help!?

I had unprotected sex with my boyfriend about 2 months ago now or close to it. He pulled out, yet I took the morning after pill just to be on the safe side. A couple of days after taking the pill, i had a little irregular bleeding and then my period about a week later, though it seemed a little lighter than usual, I am wondering If this is a pregnancy or just the pill mucking around my system. I also ha vent experienced any other symptoms such as vomiting, headaches, fatigue, tender breasts, yet I have started bloating a fair bit and a little bit of a abdominal pain? Help?