Am I pregnant?

My boyfriend and I had sex 11 days before my period was due and he ejaculated inside of me. The day before my period was due I got very tiny drops of blood, that then turned into a very light pink flow for about 12 hours, then disappeared. It's been 5 days and I've had no trace of my period since. The bleeding stopped, it was light pink and then turned into a brown color for a couple more hours. I had cramps about 3 days before the light spotting that lasted about 6 days and now I have some on and off not as bad as they were before. My boobs aren't sore or anything so I don't know.. Getting a pregnancy test isn't very easy for me considering I'm still a teenager :/