Consequences of taking birth control pills twice a year

Many people take emergency contraceptive pills after having sex. Generally, emergency contraceptive pills are used within 72 hours. The dosage is several times larger than that of ordinary contraceptive pills, so its side effects are also very large. Doctors generally recommend that women try not to take it too often, otherwise it will affect ovulation. So what are the consequences of taking contraceptive pills twice within a year?

The dosage of emergency contraceptive pills is 10 times larger than that of regular oral contraceptives. Taking them will interfere with the normal hormones in the body, cause endocrine disorders, and cause menstruation to be advanced or delayed. Taking them multiple times will lead to menstrual disorders and prolonged bleeding. Emergency contraceptive pills cannot be used as a regular contraceptive method. They can only be used 3 times a year at most, and pregnancy can only be achieved after stopping the pills for 6 months.

Emergency contraceptive pills, also known as emergency contraceptive pills, are a method used by women to prevent pregnancy within a period of time (usually within 72 hours) after unprotected sex or contraceptive failure. Emergency contraceptive pills can be divided into hormonal and non-hormonal types. The contraceptive effectiveness of emergency contraceptive pills taken within 72 hours after unprotected sex can reach more than 85%.

The mechanism of action of emergency contraceptive pills changes with the time of medication. Taking emergency contraceptive pills before ovulation can interfere with various stages of follicular growth and development; taking emergency contraceptive pills during the follicular phase can inhibit the development of follicles, delay or prevent ovulation; taking emergency contraceptive pills during the LH (luteinizing hormone) peak in the middle of the menstrual cycle can block the appearance of the LH peak; taking emergency contraceptive pills during ovulation can interfere with the development of the endometrium and interfere with the implantation of the fertilized egg.

At present, there are three main types of emergency contraceptives used clinically in my country. The first is a combined estrogen-progestin regimen, namely the Yuzpe regimen. Its mechanism of action includes multiple links, such as affecting the endometrium, causing the endometrium to develop out of sync with the development of the fertilized egg and interfering with the implantation of the fertilized egg. The contraceptive effectiveness of this regimen is relatively low, and it is accompanied by strong side effects, so it is no longer commonly used; the second drug is levonorgestrel, which can achieve contraception through a combination of effects such as inhibiting ovulation, interfering with corpus luteum function and affecting the endometrium; the last one is mifepristone, which mainly achieves contraception by inhibiting follicle development, inducing corpus luteum dissolution and interfering with the endometrium. The latter two drugs have higher contraceptive effectiveness.