Weird spotting

Okay so my last period was july 3rd and i ovulated on the 21st i had sex with my boyfriend on the 17th, 20th and 22nd i started spotting yesterday and today im still spotting and its a brown color ik it's not my period because my next period is in 11 days i looked up implantation bleeding and that's a possibility which i hope it's not because i don't want to be pregnant also i never spotted during ovulation but how could i tell if its implantation or if its ovulation spotting? If it is implantation spotting does that mean im pregnant?