implantation bleeding

So I had unprotected sex, however he didn't cum inside me. He just penetrated me for a couple of seconds then put on a condom. I then took "take action" the emergency pill in 120 hours. And now it's been 5 days and I peed .. And in the toilet I saw blood within discharge. As well as some mild cramping and headaches... Is this implantation bleeding? Or just the pill ?? Thanks.