In view of your past history and your present symptoms, it appears as though you have some hormonal
imbalance and thus are experiencing breakthrough bleeds. In this context, I would ask you to see a specialist for a proper evaluation and look for the possibility of any ovarian cysts. Proper management at an early stage would obviate the need for radical steps later on. A trans-vaginal sonogram should clarify the issue and should also confirm/exclude a pregnancy
. Hope your query has been answered. Wish you good health.