Unexpected bleeding! Help!

So I had sex with a condom on and then my partner wiped it off with a towel and we continued to hace sex but he didn’t finish inside of me. This happened on the last day of my fertile window ( the day after the day I actually ovulated). I took the morning after pill anyways. Now 8 days before my period im getting some unexpected bleeding. Can somebody please help me find out if it is implantation bleeding or just side effects of the pill?!? Its been five days since we had sex.