Hi and welcome to HCM,thank you for your query.
Ai9ds and cancers are the last thing to think of. there are many causes of such difficulties and most of them are benign and treatable. you should check your hormonal
levels and do ultrasound
and pelvis to see is there cyst
or endometrial pathology. Also you should check your coagulation factors. Usually such bleedings can be regulate dwith hormonal therapy so I am sure it will be possible in your case too.
Wish you good health. Regards