After a painless abortion, menstruation usually comes in about one month, usually the menstrual cycle is delayed backward, and the first menstruation after an abortion may also be delayed backward. A small number of people may have their period earlier or later than one week after abortion, which is normal.
After abortion, the ovaries begin to secrete estrogen and progesterone, and the uterine lining thickens under the action of estrogen. Generally, in about a month, the hormone level in the body decreases, and menstruation occurs.
Some women usually have a long menstrual cycle, which may take about 40 days, so that menstruation will not come until about 40 days after the abortion.
Very few people may have their periods earlier or later than a week after the procedure, which is normal.
If a woman feels unwell after an abortion, or if her period is more than a week early or late, she should go to the hospital for treatment.