What Causes Heavy Bleeding, Cramps With Discharges And Hematuria?

I had unprotected sex multiple times a week for this entire past month. My period is normally on the last day of each month going through roughly 5 days of extremely heavy flow with many clots into the next month. On Monday the 28th (2 days ago) I got severe cramps that followed with bleeding. Slightly on the heavy side but not like I normally get. By Tuesday the 29th in the evening I was already having the end of period dark brown discharge. And by Wednesday the 30th I was completely done. Then tonight my husband and I had sex and I went to go to the bathroom to pee and there way some bright red blood. What s this mean?