Dr. Me And My Husband Had An Intercorse 5 Days

Dr.
Me and my husband had an intercorse 5 days earlier we used protection but we were not sure abt it so after one hr of intercorse I have taken pill. As I have studied that after 3-4 days of taking the pill it bleeds. But I haven't bleed still but it feels like vomiting sometimes and its the 5th day. Is there any chance of pregnancy ?? Please guide I don't want to get pregnant