Talk to Gynecologist on Birth Control Pills For PCOS

Hello. I have been diagnosed with PCOS in my ultrasound although all of my blood tests (fasting insulin, FSH, TSH, LH and prolactin) are in normal range. However, I have vitamin D deficiency and anemia. My menstrual cycle is very irregular and have a history of missing period due to stress. One of the gynecologist gave me birth control pills (Duphaston and Yaz). I can't decide if I should start these medicines because I've read about the side effects about body being dependant on the medicines including weight gain. I'm very conscious about my weight and have anxiety and depression as well. Kindly guide me what should I do