Why is menstruation advanced 4 days

If a woman's menstruation is 4 days ahead of schedule, but the cycle is still between 21-35 days, it is normal. Don't be too nervous or worried. Generally, there are many factors that lead to early menstrual cycles, including mood fluctuations, changes in living environment, drug effects, ovarian problems, endocrine dysfunction, disease factors, staying up late, and mental stress. If there is an occasional menstruation in advance, generally do not need special treatment, it is recommended to relax, pay attention to rest, pay attention to menstrual hygiene, frequently change sanitary napkins, do not eat spicy, cold, irritating food. If the menstrual cycle is significantly shortened less than 21 days, it belongs to abnormal uterine bleeding, it is recommended that the patient go to the regular hospital for relevant examinations in time, and after the cause is clear, the corresponding treatment is carried out according to the doctor's advice.