Kinda long but need HELP

Kim
Okay so I recently started tracking my cycle. My last period was from August 19-27th. Then on August 30th I had unprotected sex, he didn't cum inside me but I realize precum may have been present. Then on September 7th I had protected sex. In September 8th I woke up to spotting which I assumed could have been because of sex the day before. Well I'm still bleeding and since its way too soon for another period in worried I could be pregnant from sex  on August 30th. I've heard implantation can cause bleeding but the bleeding I have has clots in it almost like a period. Any thoughts would be greatly appreciated since I'm currently panicking.