Taking Yoshyo, that is, drospirenone ethinyl estradiol tablets (Ⅱ) menstrual flow is particularly heavy may be the side effects of the drug, the leakage of the dose, may also be uterine fibroids, uterine adenomyosis and so on to lead to. 1. drug side effects: drospirenone ethinyl estradiol tablets (Ⅱ) belongs to the short-acting contraceptives, containing estrogen and progesterone, after eating can stimulate the growth of the uterine lining, resulting in the uterine lining shedding more, more clots, menstrual flow is particularly high. 2. Leakage: During the period of eating drospirenone ethinyl estradiol tablets (Ⅱ), if due to work life and other factors, the drug is missed, resulting in a decrease in the level of hormones in the body of the woman, the uterine lining is shed, resulting in breakthrough bleeding. 3. Uterine fibroids: the large size of uterine fibroids increases the area of endometrium, which affects the repair of endometrium. If the uterine fibroids are located under the mucous membrane, it causes an increase in the area of endometrial detachment, and the symptoms of heavy menstruation and clots appear. 4. Adenomyosis: the uterine volume increases, the area of the uterine cavity increases accordingly, adenomyosis affects the contraction of the uterus, and it is easy to have heavy menstruation, blood clots and more serious dysmenorrhea symptoms when menstruation comes. There are other possible causes of this condition, it is recommended to go to the obstetrics and gynecology clinic of the hospital in a timely manner, to clarify the cause of the disease, under the guidance of a professional physician, and follow the doctor’s instructions for treatment, do not use your own medication, so as not to delay the condition.