Awful periods

I’ve had previous problems with my cervix and have been for a colposcopy which showed cervical stenosis so I was put through a medical menopause for a year but since it stopped and my periods returned it has been awful!!! I have a heavy period for around a week and then have a day or 2 of no bleeding then it starts but it’s this brown blood and not just a little and this lasts for over 2 weeks…longest has been 19 days!!! I’m actually drained and I think I’m perimenopausal (46) but not sure if anyone else has experienced this?