I can’t be pregnant 😭

Me and my bf have sex almost everyday and he finishes in me (I’m on bc and take it at the same time every single day) After sex a week ago I wiped to get rid of the mess and there was light bleeding, almost just pink. I was 17 days away from my period at that point and my cycle is normally 28 days. I have never spotted during my cycle before. Kind of scared. 😭idk if it’s implantation bleeding or anything but I’m not experiencing any other symptoms except fatigue but I just had covid so it might be that. Someone help