How long does it take to get your period after taking the 21-day birth control pill?

Contraceptive measures are required during sexual intercourse. There are many contraceptive methods available for everyone to choose from. The more common ones are contraceptive pills, condoms or IUDs. We can choose the contraceptive method that suits us according to our needs. In normal times, many people choose to use contraceptive pills for contraception. After taking contraceptive pills for 21 days, how long will it take for menstruation to come after stopping the pills?

How long does it take to get your period after taking the 21-day contraceptive pill?

Contraceptive pills are generally used in a 21-day cycle and a 24-day cycle. Normal ovulation can usually be restored one week after menstruation stops, and one month of cessation can restore normal ovulation. So it can be maintained by taking this birth control pill. First, if the treatment is for irregular menstruation, oral contraceptives can regulate the regularity of menstruation. Of course, normal ovulation can be restored after stopping the medication for one month. If you want to have a child, you can stop taking it for a month to restore normal ovulation.

What is the principle of contraceptive pills

The contraceptive principle of short-acting contraceptive pills

Short-acting oral contraceptives are made of artificially synthesized estrogen and progesterone. They mainly achieve the purpose of contraception by inhibiting ovarian ovulation, changing the viscosity of cervical mucus to prevent sperm from passing through, changing the morphology of the endometrium to hinder the implantation of the fertilized egg, and affecting the peristalsis of the fallopian tubes.

The contraceptive principle of long-acting contraceptive pills

Long-acting oral contraceptives are made of a combination of artificially synthesized progestins and long-acting estrogen. The long-acting estrogen ethinyl estradiol in this type of contraceptive is stored in the fat tissue after entering the human body and is then slowly released, affecting the hypothalamus-pituitary-ovarian axis, thereby inhibiting ovulation and achieving a long-term contraceptive effect.

Inhibit ovarian ovulation

After taking birth control pills, the amount of sex hormones in the body increases, the functions of the hypothalamus and pituitary gland are inhibited, and the secretion of follicle-stimulating hormone and luteinizing hormone is reduced, thereby inhibiting the growth and development of follicles in the ovaries and preventing ovulation.

Changing the consistency of cervical mucus

Cervical mucus is secreted by the cervical glands. The secretory function of the cervical glands is affected by estrogen in the body. During ovulation, the gland secretion increases under the action of estrogen, and the mucus becomes thin and transparent, which is conducive to sperm penetration. During the period of taking contraceptives, the cervical glands are affected by the progesterone in the drugs, the mucus secretion decreases, and becomes viscous and turbid, which is not conducive to sperm penetration.

Changes in endometrial morphology

The endometrium is affected by progesterone and estrogen successively during the menstrual cycle, and shows cyclical changes. After taking contraceptives, the estrogen and progesterone in the drugs act on the endometrium at the same time, preventing it from developing according to natural laws. It has both proliferative and secretory changes. This underdeveloped endometrium is not suitable for implantation of the fertilized egg.

Changes in fallopian tube motility

The peristalsis of the fallopian tubes changes periodically under the influence of sex hormones, which is conducive to the normal operation of sperm, eggs and fertilized eggs. Taking contraceptives can interfere with the normal peristalsis of the fallopian tubes, speed up the movement of fertilized eggs in the fallopian tubes, and reach the uterine cavity earlier. At this time, the endometrium has not yet matured, which is not conducive to the implantation of the fertilized egg, thus playing a contraceptive role.