After a dilation and curettage (D&C) procedure, menstruation typically resumes within 30 to 40 days. During the abortion process, the endometrial lining of the uterus is damaged. Subsequently, under the influence of estrogen, the endometrial lining gradually regenerates and thickens. The body's endocrine system also requires time to recover. After ovulation resumes, the endometrial lining transforms into a secretory state under the influence of progesterone, leading to menstruation. This entire process takes some time, which is why menstruation after a D&C usually takes slightly longer to return compared to a normal menstrual cycle, typically around 40 days. Post-abortion, it is important for women to maintain good hygiene in the genital area to prevent infections. It is also essential to stay in a positive mental state and avoid sexual intercourse for one month. Avoiding cold foods and staying warm are recommended. Under these conditions, menstruation generally resumes within a month.