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Bleeding in early pregnancy: Common causes & symptoms

Bleeding during pregnancy, especially in early pregnancy is more common than believed.

Bleeding in early pregnancy:  Common causes & symptoms

Vaginal bleeding during pregnancy can occur frequently in the first trimester of pregnancy. However, if bleeding occurs in the second and third trimester of pregnancy, this can be a sign of a possible complication and will need immediate medical attention.

Possible causes of first trimester bleeding include:


This is simply the light spotting that occurs within the first 6- 12 days after conception as the fertilized egg implants itself in the lining of the uterus. Some women don't experience early pregnancy symptoms and can even mistake this bleeding for a light period. Usually, the bleeding is very light and lasts from a few hours to a few days.

The cervix gets an increased blood supply during pregnancy and becomes softer. This can cause some bleeding after sex (known as post-coital bleeding).

A vaginal infection may cause spontaneous bleeding. This bleeding may be accompanied by abnormal vaginal discharge.


Bleeding can be a sign of miscarriage but it does not mean that miscarriage is imminent. Studies show that anywhere from 20-30% of women experience some degree of bleeding in early pregnancy. Approximately half of the pregnant women who bleed do not have miscarriages so don’t be too quick to equate bleeding to miscarriage.

In an ectopic pregnancy, the fertilized embryo implants outside of the uterus, usually in the fallopian tube. Ectopic pregnancy can be life-threatening to the mother if not quickly attended to.


Any time you notice bleeding during any stage of pregnancy, it is appropriate to call your doctor. It is particularly important to seek medical attention if the bleeding is heavy (like a menstrual period) or accompanied by pain or cramping.


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