A cyst on the right ovary may be pregnancy, a physiologic cyst, or a pathologic cyst. If it is pregnancy, most patients will have a history of menopause and may experience a small amount of vaginal bleeding as well as pain in the right side of the belly. In this case, a blood test will be taken at the hospital to see if the human chorionic gonadotropin in the blood is high. If it is high, it is caused by pregnancy. If there are no such symptoms and the HCG is normal, you should consider ovarian cysts. If it is after ovulation or during the luteal phase, it may be a physiological ovarian cyst. Most physiological ovarian cysts disappear after menstruation, while pathological ovarian cysts do not disappear after menstruation, so this method can also be used to identify them.