Hi and welcome.
There can be few reasons for your symptos but most likely is hormonal imbalance. I would recommend you to get your TSH, prolactin, FSH, LH , testosterone and insulin levels and get an ultrasound abdomen and pelvis to rule out any pathology related to reproductive organs. A visit to gynecologist for thorough examination would be helpful in diagnosing the condition.
Let me know if you have further questions.
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Wish you good health.