You can still take progesterone after taking emergency contraceptive pills, but you need to take it under the guidance of your doctor. Emergency contraceptive pills belong to the hormone class of drugs, the drug contains a large number of hormone components, after taking the drug may appear menstrual disorders. Progesterone is a progestin drug that can be used to regulate menstruation or supplement progesterone. It is best not to take progesterone for a short period of time after taking the emergency contraceptive pill, so as not to cause hormone level disorders in the body after taking the two drugs at the same time, affecting the menstrual cycle. If there is a delay in menstruation after taking emergency contraceptive pills and pregnancy is ruled out, progesterone can be taken under the guidance of a doctor according to the thickness of the uterine lining to promote menstruation. Emergency contraceptive pills side effects, it is recommended to do a good job of contraception, should not be taken frequently, progesterone can not be used at random, so as not to affect the normal menstrual cycle.