“Why did I get pregnant even though I took the emergency contraceptive pill?” I’m afraid this question is a puzzling one for many young lesbians. Why exactly did the contraception fail? Is it because the pill has expired? The truth is simple, we know too little about the correct way to take the emergency contraceptive pill. The actual fact is that many people are “too hard” and “ignore contraception” when they have sex, which leads to nervousness afterwards, so they have no choice but to take the emergency contraceptive pill. However, once you miss the best time for contraception, or improperly taken. If the pill fails, the health of your body will be jeopardized. So, how to take the emergency contraceptive pill is the right thing? First, take the emergency contraceptive pill within 72 hours after unprotected intercourse (preferably within 12 hours) as soon as possible, otherwise the efficacy of emergency contraception will decrease due to the delay in the use of the pill, and almost no effect when taken after 72 hours. Second, the interval between two doses of emergency contraceptive pill can not exceed 12 hours, otherwise the blood concentration will decline and affect the effectiveness of contraception. If you miss the second dose time, making the interval more than 15 hours, then the first dose is invalid, need to take the pill again. Third, the emergency contraceptive pill is only effective for a single sexual life, that is to say, if there are several sexual life in these days, its contraceptive effect will be greatly reduced, it is recommended to use condoms or other forms of contraception is better. Fourth, after taking the emergency contraceptive pill and then have intercourse, and there is no protection measures can also be pregnant. If vomiting occurs within 2 hours after taking the pill, you need to take it immediately, otherwise it will also affect the contraceptive effect. It is generally recommended that fasting or fasting before and after taking the pill for about 2 hours is more effective. V. Make sure you are not pregnant before taking the oral emergency contraceptive pill. References: [1] Wen Caihe. Contraceptive pills [J]. Health Expo. 2015(5):37