Why did contraception fail after taking emergency contraceptive pills? What factors can lead to contraceptive failure

I believe every woman is no stranger to emergency contraceptives, which are common contraceptive methods. But some women still experience unexpected pregnancies after using emergency contraceptives during sexual intercourse, what is the matter.

Why do you still get pregnant after taking emergency contraception?

1. Not frequently using emergency contraceptives

Many people believe that taking it within 72 days after sexual activity can achieve contraceptive effects, but this is actually a wrong idea. Pregnancy is a complex process, and everyone's physical conditions are different, making it difficult to accurately determine the survival time of sperm and eggs in the reproductive tract. In addition, even when using emergency contraceptives, there are significant differences in the rate of release and absorption in the body after taking the medication due to the influence of pharmaceutical processes. So it is best to use emergency contraceptives as early as possible, as the earlier you eat, the higher the success rate of contraception.

2. Recurrent unprotected sexual activity after taking emergency contraceptive pills

Many women believe that after taking the emergency contraceptive pill, their body enters a state of contraception, and that sexual activity before and after taking the pill can achieve contraceptive effects, which is actually a wrong idea. Emergency contraceptives can only have a contraceptive effect on sexual activity that has already occurred. If there are two or more unprotected sexual activities before taking the medication, or if there is another unprotected sexual activity after taking the medication, it may lead to unexpected pregnancy and increase the side effects of the medication on the body.

3. Taking contraceptives together with other medications

During the period of antibiotic treatment for diseases, emergency contraceptives should not be chosen for contraception. Some components of antibacterial drugs can inhibit the proliferation of bacteria in the intestine, reduce hormone binding and decomposition, reduce liver circulation, and thus reduce the concentration of steroid hormones in the blood, leading to contraceptive failure. Other antiviral and antifungal drugs can also interact with emergency contraceptives in the body, reducing their chances of contraception.

4. Medication not properly stored

Most birth control pills are sugar coated tablets, and the components of the pills are in the sugar coated layer. If the medication is damp, broken, or melted, it will reduce the dosage and thus affect the contraceptive effect. In addition, oral contraceptives are mainly absorbed through the gastrointestinal mucosa. If diarrhea or vomiting occurs during the use of contraceptives, it can affect the absorption of contraceptives and lead to contraceptive failure.