A woman’s menstrual cycle of 21-35 days is considered a normal range, if menstruation at the time of the failure to come as promised and have sex with women of childbearing age, you need to first rule out the possibility of pregnancy. Then you can eat food to help menstruation, such as red dates and wolfberry tea, brown sugar water, red dates and astragalus, Agaricus, and other food to replenish blood and qi. You can also take Chinese medicines that invigorate blood circulation and remove blood stasis to help menstruation, or even make menstrual flow more frequent, such as motherwort granules or motherwort cream, wuji baifeng pill, free pills and other Chinese medicines that regulate menstruation and replenish blood. If the menstruation is often delayed, food and medicines for activating blood circulation and removing blood stasis may not always have obvious effects, so it is recommended to go to the hospital to check the level of sex hormones, ultrasound, etc. and then combine with the medical history and test results to regulate menstruation. If you have a regular menstrual cycle and want to start your period earlier for your own reasons, then you need to take progesterone capsules to start your period earlier.