Post cone biopsy period pain and exercise

Hi all, i had cone biopsy 3 weeks ago and yesterday i had my period. I experience much heavier period and more pelvic cramps post cone biopsy. Before cone biopsy my period wasnt as much and menses cramp wasnt as much. Is this normal?

Did anyone start to exercise before the 6 weeks mark? I used to exercise everyday and hope to restart my exercise (running) routine by 4 weeks mark.