Hi, I had unprotected sex (withdrawal method) on the 9th of march, then I took postinor 2 the morning after we had sex. Then my period came 3 days after. Then on the 26th and 30th of April, we had sex again (withdrawal method), after 14 & 16th day post sex, we had both PT resulted negative. My period is 2 days late since the second post sex day. Is it the postinor causing my period irregular or am i pregnant? But the PT shows negative in both tests. Please advice