Thanks for posting your query on health care magic.
You symptoms suggests you are suffering from premenstrual syndrome
Cyst in the ovary at your age is most likely follicular cyst
Normally it resolves on its own and no treatment is necessary. Just observer and get a follow up scan after 2 months
If cyst persists and increases in size then take oral contraceptive pills
for 3 months.
This will treat your premenstrual symptom as well.
Hope this helps.