MENORRHAGIA. 2 units blood also last!

My wife is suffering from heavy bleeding with clots for last few years and we have 1 baby 8 years old. Initially 2 times sudden abortion took place with great difficulty she conceived and had a baby in 2012. Now for last few years it is severe. Initially Dr.advised Novelon and other Harmonal tablets but didn't work out.Polyp was found and removed,post biopsy severe harmonal imbalance was found..Harmonal tablets were given but not very much effective.For last 2 years she takes Pause XT during periods then only it becomes normal, if missed or delayed it will be heavy bleeding with clots..In March again it became uncontrolled and Trenexa injection was given to stop bleeding, post thus Dr.advised for CBP and pelvis USG..Report was normal and haemoglobin was 8.5, less RBC and platelets count 1.19 Lakhs..she us continuing Crina NCR 10 mg and now it is controlled but don't know what will happen next month and how long she will suffer as due to blood loss she was given 2 units blood also last