Colposcopy, biopsies, hpv negative

I’ve had a colposcopy today, due to post coital bleeding & bleeding between periods. My last smear was 2 yrs ago & hpv negative. They found an area of abnormal cells when putting the vinegar solution on my cervix today. They said it’s very unusual when hpv negative to have abnormal cells, so have taken biopsies to test. She could also see bleeding higher up my cervical canal. Should have results within 4 weeks. Has anyone experienced this please? Thank you