How long does implantation bleeding last?

Implantation bleeding refers to the discharge of a certain amount of blood from a woman's vagina when the sperm and egg combine and the embryo implants in the uterus. The bleeding conditions vary greatly from person to person. If you are a pregnant woman, if you want to know whether your bleeding time is normal, you'd better refer to the content in this article carefully.

How many days does the bleeding last after the embryo implants?

Embryo implantation bleeding usually lasts about three or four days. If the bleeding persists and is heavy, it is recommended that women seek medical treatment as soon as possible.

Embryo implantation occurs about 6 days after fertilization. At this time, most pregnant women do not have very obvious reactions, and a few women will have some bright red or light pink blood stains, which is called implantation bleeding. This symptom does not occur in everyone, so it is not an obvious pregnancy phenomenon. Implantation bleeding occurs about 1 week into pregnancy. If it is 7-10 days since ovulation, then it can be suspected that the embryo has implanted. You can go to the hospital for examination. If it is more than 12 days since ovulation, it may be menarche.

Is implantation bleeding normal?

When the embryo implants and bleeds, there are generally no other accompanying symptoms, such as abdominal pain, menstrual discomfort, etc., which belong to the normal physiological needs of embryo implantation. Just keep the vulva clean. However, if the bleeding is heavy and continuous, women need to be alert to whether it is caused by physiological bleeding. The following reasons can cause physiological bleeding in women:

1. Miscarriage: When the decidua basalis bleeds, the embryo and the endometrium are separated and the uterus is stimulated, causing uterine contractions, cervical dilation, and blood to be discharged from the uterus. This type of bleeding is often accompanied by lower abdominal distension and pain. The amount of bleeding increases from a small amount to a large amount, the color changes from dark to red, and the abdominal pain gradually develops from dull pain to severe pain.

2. Ectopic pregnancy: When the sperm and egg combine and grow to a certain level, the walls of both fallopian tubes will crack and bleed. Because this type of bleeding occurs in the abdomen, vaginal discharge may not involve a lot of blood. However, this type of excessive blood loss often results in fainting, shock, etc. If rescue is not timely, it may lead to the patient's death.

3. Hydatidiform mole: Hydatidiform mole miscarriage usually begins in the 2nd or 3rd month of amenorrhea. Bleeding is usually intermittent, but some cases may have repeated bleeding.

In addition, cervical cysts, cervical cancer, external or low-lying placenta, etc. can also cause vaginal bleeding.