About 30-40% of women experience a slight loss of blood after implantation of an embryo in the uterus. This is known as implantation bleeding.
Dr Manuel Fernandez, director of IVI Sevilla, clarifies some questions on the issue.
When does it occur?
Bleeding usually occurs in the first weeks of pregnancy, as the uterus is an area full of blood vessels which can bleed easily. When the embryo adheres to the inner wall of the uterus, small veins and arteries which usually connect to the endometrium are ruptured, and this may cause bleeding.
When does implantation bleeding occur?
This takes place 6-10 days after fertilisation, which usually coincides with the theoretical menstruation date, and so may be confused with this.
Implantation bleeding does not follow a set pattern, and can occur in just one or all pregnancies.
How long does it last?
This blood loss may last 1-3 days, and the intensity is usually less than that of a period, although the colour may be darker.
Is implantation bleeding related to an abortion or ectopic pregnancy?
There is no direct relationship between implantation bleeding and the risk of abortion or ectopic pregnancy, as these may occur without any bleeding.
What should I do if this bleeding occurs?
Check with your gynaecologist. It is a situation that often leads to significant concern. Therefore, appropriate assessment and care helps patients understand that this is part of the normal process of pregnancy.