Implantation Bleeding

• Implantation bleeding can be a reason for brown discharge. Implantation bleeding occurs when a fertilized egg implants in the uterus. Not all women will experience this bleeding.
  
  

Old Blood

• Brown discharge during pregnancy can be caused from old blood. This blood was once used to protect the fetus, but it is no longer needed and is discharged from the body.
  
  

Miscarriage

• During pregnancy, brown discharge can be a sign of a miscarriage. A miscarriage occurs when the body dispels the fetus, often for unknown reasons.
  
  

Verruca Virus

• The Verruca Virus can cause brown discharge during pregnancy. Burning, itching and pain in the vaginal area often accompany the brown discharge.
  
  

Expert Insight

• Some women experience brown discharge during pregnancy for no known reason. It is best to seek a physician for medical advice.