Brown discharge at 20 weeks of pregnancy may be due to preeclampsia, hypoplastic placenta, cervicitis and so on.
1. Pre-eclampsia: a small amount of vaginal bleeding occurs before the 28th week of pregnancy, often dark red or bloody leukorrhea, no pregnancy discharge, and then there will be paroxysmal lower abdominal pain or lower back pain, which will lead to brown discharge at 20 weeks of pregnancy.
2. low placenta: the placenta is attached to the lower part of the uterus, the edge of the cervix is less than 2cm away from the cervical opening, once there is external force, tiredness, strenuous exercise and other stimuli will make the blood sinus open and cause bleeding, may also lead to 20 weeks of pregnancy with brown discharge.
3. Cervicitis: If a pregnant woman suffers from cervicitis, it can manifest as increased vaginal discharge, abnormal vaginal bleeding and other symptoms, which can lead to brown discharge at 20 weeks of pregnancy.
There may be other reasons for the brown discharge at 20 weeks of pregnancy, it is recommended to go to the hospital and standardize the treatment in time to avoid delaying the condition and causing adverse consequences.