How long after sex is it effective to take birth control pills

If a man and a woman have sex without taking proper contraceptive measures, pregnancy is possible. If you do not want a child, you can choose to take birth control pills, but they must be taken within 24 hours after sex and not more than 72 hours. Also, please note that birth control pills can only be taken once a month and not more than three times a year, otherwise it will cause symptoms of infertility in women and will also affect their menstrual cycle.

Emergency contraceptive pills: The sooner you take them, the better the effect

1. The medication is effective within 72 hours after sexual intercourse. If you have sexual intercourse again while taking the medication, the time must be recalculated.

2. The effect of taking the medicine is generally to take the first tablet within 72 hours after sexual intercourse, and then take another tablet 12 hours later. The earlier you take it, the more effective the contraceptive effect. In addition, emergency contraceptive pills are only effective for the previous sexual intercourse. If you have sex again after taking the pills, it is best to take other contraceptive measures. For example, if you use an intrauterine device, it should be inserted within 5 days after sexual intercourse.

3. How to take: Taking emergency contraceptive pills after meals or before bedtime can reduce side effects such as nausea and vomiting. If vomiting occurs within 2 hours after taking the medicine, you should immediately take the same dose of emergency contraceptive pills and add antiemetics.

Short-acting contraceptive pills: Take one pill every night for effective results

1. The effective time of taking the medicine is within 1 month after taking it. If you stop taking the medicine during the period, the time must be recalculated.

2. Effects and methods of taking the medicine: Start taking the medicine on the 5th day from the day of menstruation, 1 tablet every night for 22 consecutive days, which can prevent pregnancy for 1 month.

Long-acting contraceptive pills: Take one pill a month to be effective

1. The effective time of taking the medicine is long-term after taking it according to the regulations. If you stop taking the medicine during the medication period, the time must be recalculated.

2. Effects and methods of use: Generally, take 1 tablet on the fifth day after menstruation, and take another tablet 20 days later. Take it once a month thereafter, one tablet each time is effective.

Is it effective to take short-acting contraceptive pills after sex?

It doesn't work. Short-acting contraceptives are generally taken starting on the 5th day after menstruation, 1 tablet a day, for 22 consecutive days without interruption. This method of contraception has fewer side effects, but if you take short-acting contraceptives during sexual intercourse, it will not have any contraceptive effect.

How to take contraceptive pills after sex is more convenient and effective

It is determined according to the sexual life patterns of the couple.

1. Have a routine

For couples who live together and have a regular lifestyle and can take oral contraceptives every day, they can choose to take short-acting oral contraceptives, such as oral contraceptives No. 1 and No. 2; start taking them from the fifth day of menstruation, one tablet a day, for 22 consecutive days.

2. No rules

If a couple has an irregular lifestyle and cannot take oral contraceptives every day, they can choose long-acting oral contraceptives, such as combined 18-methylnorhenothrone. Take the pill once on the fifth day of menstruation, take the second time 20 days later, and then take it once a month, one pill each time.

3. Occasional sex

The couple live apart. When visiting relatives, you can take visiting contraceptive pills, such as Visiting Pill No. 1; take one tablet 8 hours before sex, and then take one tablet every night until the visit is over, and take again the next morning. It is not suitable for long-term use. Or take emergency contraceptive pills, which are effective within 72 hours after sex.