Am I pregnant?

My boyfriend and I were messing around before we put on a condom. He never ejaculated in me but I know that pre-ejaculation has sperm in it(I'm not even sure what pre-ejaculation is). Three days passed and we had sex again. About an hour or two I noticed some bleeding. The blood was bright red and a small clot was present. I havent had any other symptoms but I have had some very minor cramping. The cramps feel like someone is touching me, not even hard. I just finished my period a week ago and don't want to wait to see if I miss it to know.
Please help I'm desperate.