Why Is My Period Unusually Light And Inconsistent This Month After Starting Unprotected Sex Three Months Ago?

Hi. I have always had majorly heavy periods, I started having unprotected sex three months ago. My cycle is usually 33 days apart. This month on the 31st day I noticed pale pink when I wiped, it then turned to brown spotting then dark and bright red spotting. Sometimes I wipe it’s heavy, others there’s hardly anything at al there. Today I noticed clear discharge and blood at the same time and now I’m slightly clotting