There are two main reasons for taking Yosmin i.e. drospirenone ethinyl estradiol tablets to keep bleeding in small amounts, one of them is bleeding caused by endometrial shrinkage after taking the medicine, i.e. breakthrough bleeding, and the other one is missing the dose or not taking the medicine at the same time. It is recommended to consult a doctor for timely adjustment and treatment. Drospirenone ethinyl estradiol tablets are short-acting contraceptives containing estrogen and progestin. They are also used to improve premenstrual irritability and acne in women over 14 years old. Adverse effects include spotting bleeding, nausea and breast tenderness. 1. Breakthrough bleeding: Contraceptives such as drospirenone ethinyl estradiol tablets contain large doses of progestin, which can cause atrophic endometrial bleeding. Vaginal bleeding may occur when starting the pill, and improves in most women by the 3rd month of use. Compared with those who take the pill periodically, some women who take the pill daily without interruption are more likely to experience irregular bleeding. 2. Incorrect way of taking the pill: When women miss taking the pill or do not take the pill at the same time, it will cause fluctuations in hormone levels, which will lead to vaginal bleeding, and the amount of bleeding is usually not more than the usual amount of menstruation. Taking drospirenone ethinyl estradiol tablets has been a small amount of bleeding women, need to consult a doctor to rule out pregnancy or gynecological diseases and other factors, a small amount of bleeding can be prescribed to take Yunnan Baiyao, tranexamic acid, etc. to stop bleeding, if the method of taking the drug is correct, can be adjusted under the guidance of a doctor to continue to observe the bleeding symptoms of the medication, or to comply with the doctor’s advice to change the birth control pills, can not be discontinued on their own.