Pregnant..?!

(SORRY TMI) I had unprotected sex the day that my period ended and he totally came in me then the day I was supposed to ovulate same thing happened and I haven't been on birth control for six months.. I have one day till my period but I have been super tired, have had cramps and lots of discharge and been nauseous the last week. I really don't know if I am just over thinking this I don't even know if it is possible to have any of these symptoms. PLEASE HELP THANKS