Health Steward Q&A Women’s Health Pregnancy & Prenatal Care

When is menstruation normal after giving birth?

Asked by:Nina

Asked on:Apr 17, 2026 03:05 PM

Answers:1 Views:407
  • Vidar Vidar

    Apr 17, 2026

      Menstruation occurs after puberty female Menstruation occurs once a month. Menstruation is a normal physiological phenomenon that occurs in women of childbearing potential. Since menstruation is cyclical, the period between this menstruation and the next menstruation is called a menstrual cycle.

      Under normal circumstances, girls experience menarche at the age of 12-16 and menopause at the age of 50-55. Apart from Irregular menstruation In addition to causing "reports" of irregular menstruation, menstruation will stop after pregnancy and return to normal after a period of time after the birth of the baby.

      So, when is it normal to have your period after giving birth? Since everyone’s physique is different, Postpartum There is no fixed time for the recovery of menstruation, it can only be said that it varies from person to person. In the early case, menstruation will begin after the full moon, while in the later case, menstruation will not resume until the baby is 1 year old.

      From a medical perspective, according to Uterus Judging from the tissue morphology of the endometrium, it can be speculated that the ovary may be able to ovulate as early as 33-42 days postpartum. In addition, the presence of the corpus luteum after ovulation can also be observed at 6 weeks postpartum. Therefore, if the mother is not breastfeeding, menstruation usually occurs within 6 to 8 weeks after delivery.

      Research data shows that 40% of mothers who are not breastfeeding resume ovulation 6 weeks after delivery; by 8-12 weeks after delivery, only about 35% of mothers have not resumed ovulation and menstruation. About 25% of breastfeeding mothers will resume ovulation and menstruation at 12 weeks postpartum. Most breastfeeding mothers usually do not fully resume ovulation until 18 weeks. However, sometimes it is difficult to clinical It is difficult to determine the exact time of the first menstrual period after delivery, and a small number of women will begin to have small to moderate intermittent bleeding immediately after delivery.

      Breastfeeding mom’s menstruation

      breastfeeding baby For new mothers, ovulation and menstruation resume later, and some may not have their period until a year later. For most people, the first menstrual flow is heavier than usual, and the second menstrual flow is normal, so no treatment is needed.

      When menstruation begins, the amount of milk produced by nursing mothers generally decreases, and the quality of protein and fat contained in the milk also changes slightly. The protein content is higher and the fat content is lower. This kind of milk sometimes causes indigestion symptoms in babies, but this is a temporary phenomenon and will return to normal after the menstrual period. Therefore, whether during or after menstruation, mothers do not need to stop breastfeeding.

      【Tips】

      1. How long does it take to get menstruation after giving birth? Postpartum lochia is not menstruation

      Under normal circumstances, after a mother gives birth, the birth canal will shed blood-like secretions like menstruation. This bleeding from the placenta implantation site is mixed with secretions such as decidua, tissue fragments, and mucus remaining in the uterus, which is called lochia.

      Under normal circumstances, in the first 4 to 5 days, the amount of lochia is large and red; after one week after delivery, the amount of lochia gradually decreases and turns brown; after the 10th day, the color becomes lighter, slowly turning from yellow to white, without a special smell. Lochia usually disappears 4-6 weeks after delivery. But sometimes a small amount of brown lochia will last until the first menstrual period after delivery.

      Lochia generally does not exceed menstrual flow. If the bleeding lasts for more than two weeks, exceeds the menstrual flow or has blood clots, or if the vaginal discharge appears like rotten flesh or has a putrid smell, you should seek medical advice in time.

      2. Common postpartum menstrual abnormalities include uninterrupted vaginal bleeding and amenorrhea Two situations:

      First case:

      Since the first menstrual period after giving birth is usually an anovulatory cycle, or is caused by a dysfunctional corpus luteum, and the ovaries are still not very sensitive to the stimulation of gonadal hormones at this time, various abnormal phenomena such as postpartum lochia dripping non-stop, occasional irregular recurring small amounts of bleeding, or bleeding similar to menstrual cramps during confinement are common.

      If you are sure that you have not taken any food or medicine that would inhibit uterine contractions, and the postpartum examination before discharge did not reveal anything that would cause postpartum hemorrhage, you can ask your doctor during your postpartum follow-up visit. If you have frequent or heavy bleeding during or after confinement, it is recommended to seek medical treatment immediately and receive diagnosis and treatment from an obstetrician and gynecologist.

      Second case:

      Postpartum amenorrhea is mainly seen in long-term breastfeeding, postpartum hemorrhage, and Han syndrome caused by infection; in addition, excessive prolactin in the body can also inhibit ovulation and cause amenorrhea.

      Before delivery, although the concentration of prolactin in a pregnant woman's body is high, due to the influence of estrogen, prolactin cannot express its effects. After delivery of the placenta, the effects of prolactin are intensified by a sudden decrease in estrogen concentrations in the body. Generally speaking, prolactin will return to its pre-pregnancy state two weeks after delivery.

      However, in lactating mothers, prolactin not only remains at a higher level than before pregnancy, but also increases in response to the baby's sucking. Low estrogen levels in lactational amenorrhoea can last up to 180 days. Therefore, as long as you are breastfeeding, a new mother's period should not come too early. Of course, different people vary greatly. In addition, some parturient women develop endometrial atrophic amenorrhea due to prolonged breastfeeding.

      Another major form of amenorrhea occurs in women with postpartum hemorrhage associated with shock, severe postpartum infection, or disseminated intravascular coagulation. These symptoms can lead to amenorrhea, the so-called Han syndrome, which can also affect the secretory function of the thyroid gland. Symptoms such as weight loss, indigestion, chills, fatigue, atrophy of sexual organs, low basal metabolism, and hair loss need to be diagnosed and treated by a doctor.

      However, in lactating mothers, prolactin not only remains at a higher level than before pregnancy, but also increases in response to the baby's sucking. Low estrogen levels in lactational amenorrhoea can last up to 180 days. Therefore, as long as you are breastfeeding, a new mother's period should not come too early. Of course, different people vary greatly. In addition, some parturient women develop endometrial atrophic amenorrhea due to prolonged breastfeeding.

      Another major form of amenorrhea occurs in women with postpartum hemorrhage associated with shock, severe postpartum infection, or disseminated intravascular coagulation. These symptoms can lead to amenorrhea, the so-called Han syndrome, which can also affect the secretory function of the thyroid gland. Symptoms such as weight loss, indigestion, chills, fatigue, atrophy of sexual organs, low basal metabolism, and hair loss need to be diagnosed and treated by a doctor.

      After the full moon, the mother may resume ovulation, so how long will it take for her period to start after giving birth? Contraceptive measures should be used from the first sexual intercourse after childbirth. Suitable contraceptive methods during lactation can be condoms and progestin-only contraceptive injections. The method of using progestin-only contraceptive injection is to inject one injection on the 5th day of menstruation, and then every 3 months.

      Since the estrogen in contraceptive pills can reduce milk secretion and quality, and can also enter the milk and have adverse effects on newborns, lactating new mothers should not use short-acting oral contraceptives.