AM I PREGNANT ??? PLEASE HELP

Me and my ex boyfriend had unprotected sex 2 weeks ago. I ovulated on the 9th but had sex on the 6th. About 4 days ago I wiped and there was some red blood like actual blood color. My boobs are sore and my stomach is cramping but not like normal. My period is due tomorrow. Could I be pregnant?? Btw he ejaculated a few seconds after he pulled out.