Hi, Welcome to Healthcare Magic Forum. I have gone through your Query & I really appreciate your concern about the problem you are facing. As a physician I would like to tell you that Oestradiol is the major oestrogen in pre-menopausal women. Ethinylestradiol which is the drug in this pill has similar actions as oestradiol. It is responsible for the development and maintenance of female reproductive system and secondary sexual characteristics. It is a integral part of the treatment of PCOS. Some side effects of Dronis 30mg are Oedema, hypertension; dizziness; headache; thromboembolism; cholestatic jaundice; nausea, vomiting; disturbance of menstrual cycle; fluid retention, discomfort in breast, wt gain/loss; increased appetite, increased tendency for vag candidiasis; mental depression; alteration in libido; rashes; alopoecia, hirsutism; gynaecomastia and impotence. Potentially Fatal: Endometrial cancer (prolonged use). Thus I would like to advice to you that you should continue using it for at least one cycle. The symptoms goes away sometimes as our body adjusts to the hormone and it s levels. But, if the problem persist, you should tell your treating physician about the same and get a different type of treatment. Thanks for Trusting & Posting your Query on this forum. Hope this will help you. Feel free to ask any further question. Have a nice Day. Regards, Dr.Abhijeet