Am I pregnant?

My boyfriend and I had unprotected sex a few weeks ago but he pulled out. I’m suppose to start my period today but for the past couple days i’ve had major back ache and my legs are really sore. My boobs are becoming sore too and I have slight cramps. Today he fingered me and an hour later I looked in my pants and there was blood. I went home and showered and put underwear on and now i’m not bleeding but I have slight cramps and my boobs really hurt. Are these pregnancy symptoms?