The short-acting contraceptive pill can’t be taken on the same day, the short-acting contraceptive pill must be taken continuously for 22 days to be able to play a contraceptive effect. The pharmacology of short-acting contraceptives is to inhibit ovarian ovulation, generally need to take 22 days to play a contraceptive effect, after taking short-acting contraceptives, generally within a week is not allowed to cohabitate, the contraceptive pill belongs to the hormone class of drugs, will lead to the next period delay. Most women taking short-acting birth control pills will have the side effect of low menstrual flow or even amenorrhea, this is because the pill restricts the secretion of estrogen, resulting in the thinning of the uterine lining and caused by the general stopping of the pill will return to normal. There may be symptoms such as dizziness, fatigue, nausea, vomiting, drowsiness, anorexia, etc. Mild cases do not need to be dealt with and usually disappear after 3 months. Therefore, it is still necessary to use contraceptive measures, such as wearing a condom, if you have intercourse on the day of the short-acting contraceptive pill. If you need to use short-acting contraceptive tablets, please consult a specialized doctor.