My last period was on the 22nd March and I

Patient: My last period was on the 22nd March and I had sex on 5th April though my boyfriend did not cum inside me but I took postinor 2 to be on a safe side. I had dark brownish discharge on 19 April and on 25 th may. I had 7 pregnancy test done and it all came back negative. My period has never been irregular all my life should I be worried?

Doctor: