Hormone problem - Irregular Periods.

Hi, I am am mother of 3 yr old and my age is 33. Post delivery I still have not got my regular periods. In the span of these 3 yrs I only had 3 times periods and that after taking medication. Last month I consulted a doctor and she suggested me Primolut for 5 days plus prolactin check up as I have a history of hyperprolactinaemia. She also suggested me an ultrasound which I have not done yet due to the ongoing situation. My prolactin levels was 90 so she suggested me cabgolin which I took one tablet a week for two weeks. I got my periods last week but the discharge was brownish and had very light bleeding. My periods lasted for only two days. What should I do next? Is it a case of early menopause? Should I continue taking the medicine again in order to get the period next month also? Please suggest. I am not getting any permanent solution for this. Due to this imbalance my body behaves in a different way certain days of the month which I am not liking. I want to regulate my periods.