I Had An Unprotected Sex With My Husband On The

I had an unprotected sex with my husband on the 12th day of my circle, though he didn't come inside me cos he withdrew but I was scared and took portinor 2 tablets after 3 hours.. was suppose to get my period today but I did a pt test this morning only to have it positive. Could it be a false positive result due to the postinor 2 tablets that I took?