Vaginal discharge is a very common symptom during pregnancy and is usually harmless. Normal vaginal discharge is called leucorrhea and is thin, white, and milky. However, some types of vaginal discharge are not that normal and you may notice varying discharge throughout pregnancy.

If you notice a discharge that is green or yellowish, has a strong odor, or is accompanied by redness or itching, it may be a sign of a problem such as a yeast infection or an STD. In this case, it's a good idea to call your healthcare provider.

In other cases, a change in vaginal discharge may indicate something more serious, such as premature birth, especially if you have other risk factors for it. Changes in vaginal discharge that may be associated with preterm birth include:

Change in stream type

Change in consistency or flow sensation

Increased amount of discharge

Color change, especially pink or brown

If you notice any changes in your vaginal discharge, it is best to contact your healthcare provider, especially if you are at risk of preterm delivery.