After stopping the pill, if you still do not have a period after 10 days or more, you should have an ultrasound examination to find out the thickness of the uterine adnexa and the lining of the uterus, and even a blood HCG test to find out if the lack of periods is caused by pregnancy because the pill is not working. If it is ruled out that it is not caused by pregnancy, if the lining is thin, you can take the pill again for the next course of treatment. If the endometrium is thicker, you can wait for a few days or give oral medication to promote menstruation, such as Yimu Cao Oral Liquid or Blood Mansions and Blood Stasis Oral Liquid, to promote menstruation. During the menstrual period, you should abstain from eating cold, spicy and stimulating foods and keep warm.