A 10-day delay in menstruation is definitely abnormal. If the period is 3 days early or 3 days late based on the original menstrual cycle, this is normal, but now that the period has been delayed for 10 days, it is clinically abnormal and it is recommended to exclude the possibility of pregnancy. If there is no pregnancy, the vast majority is caused by endocrine disorders, because menstruation is affected by emotions and environment. Once there are mood swings, frequent drinking of frozen drinks or environmental changes, it may lead to delayed menstruation. It is recommended that you can take hot brown sugar water orally for 3 days to see if you will get your period. If you still do not get your period, you can also take progesterone orally to induce menstruation, once a day, 2 capsules once, for 3 days, and you will get your period 3-7 days after you stop taking it.