Can excessive menstrual flow lead to miscarriage?

Patient's question:

Doctor:
Hello! I had a medication abortion on September 23rd because it wasn't completely effective. On October 9th and October 16th, I underwent a D&C (dilation and curettage) and a scraping procedure, respectively. My bleeding stopped on October 20th. Now, on November 9th, I had my period, but the flow was much heavier than usual. My periods have always been heavy, but now they are even heavier. Could this be related to the abortion? Is it serious? Please help me ease my worries!

Doctor's answer:

Women who have had a miscarriage often experience excessive menstrual bleeding, which is primarily related to the following factors.
1. After the surgery, due to the stress experienced by women, this negative psychological factor can lead to menstrual irregularities, resulting in excessive bleeding after miscarriage. Therefore, excessive menstrual bleeding is abnormal.
2. During the surgery, if the endometrium is excessively removed, it may not be fully repaired in the short term, leading to excessive menstrual bleeding.
3. Sexual activity should not be engaged in within the first month after a miscarriage. Some couples fail to adhere to this, which can cause infections and inflammation in the uterine cavity, resulting in excessive menstrual bleeding.
4. After a miscarriage, hormonal changes occur. The ovaries fail to respond normally to the pituitary gland's anterior lobe's stimulatory hormones, leading to excessive menstrual bleeding after miscarriage.

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