Hi all gorgeous mom’s outhere! I need a little help or your best idea. I had my first day of…

Hi all gorgeous mom’s outhere! I need a little help or your best idea. I had my first day of menstrual period april 18 early am and lasted 4 days yet it was light pink already on the fourth last day. We made unprotected love making on the 23April 3 days prior to my ovulation period. I am now 9 days delayed for the month of May. I did my PT twice but came out negative. Anyone has an idea? I would appreciate.