Firstly, if you have pcos
, mentsrual irregularity is known to happen. You need to make sure you are bleeding from the vagina, and not in urine. Hormonal
imbalance can cause bleeding irregularities. Next, there is nothing like 'precancerous ovaries'. The diagnosis has to be confirmed. With ultrasound
and blood tests. If ovaries are cancerous they have to be removed. They do not become normal again. If you had cystic ovaries, the yes, they can be normal again. In my opinion, you need to do tests for hormonal imbalance again. Consult a gynaecologist.