I need answers.

Okay ladies I'm 6weeks 6 days pp and I'm so nervous worried. Don't even know how to describe it okay so I had my last checkup on the 31st of August got the drop shot and 4 days after I had unprotected sex cause I was hardly bleeding so we had unprotected sex twice. I've been having heavy bleeding for like 4 days could I be pregnant again or is this normal please if someone has a clue if I could be pregnant comment I would really appreciate it thanks.