Taking progesterone can delay menstruation. If you take progesterone, usually you will get your period within 3-7 days after stopping the medication. It is better to observe and see after taking the medication to avoid causing endocrine disorder. However, if your menstruation is regular, it is better not to use drugs to postpone your menstruation indiscriminately to avoid causing menstrual disorders. If you have to postpone your period, it is better to take the medication under the guidance of a doctor in a reasonable manner so as to be safer. If your period is irregular, it may be caused by gynecological inflammation, eating drugs, mental tension, etc. It is best to go to the hospital for examination, you can do a gynecological examination, under the guidance of a doctor to take reasonable drugs to regulate, usually pay attention to rest, relax, do not stay up late, it is best not to give yourself too much psychological pressure.