Help!!! Am I pregnant???

My boyfriend and I have been having unprotected sex for a while now. I was on birth control (ortho evra) for a long time but I stopped using it about 2 months ago. I started getting mild cramps as I sometimes do before I get my period, even though I thought it was a little early(4 days before). The cramps have continued now, on and off for about 6 days. I starting having some light brown spotting around that time too. I've been waiting for it but it is 2 days late(and that never happens. in fact its always early). Today my breasts were sore and heavy.