Hi,
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The discharge that you describe could be the increased vaginal discharge that is commonly seen during pregnancy. If it was blood tinged or straw colored or brownish, it could suggest passing of mucus plug. If the discharge is watery and persistent, you should consider visiting your doctor/gynecologist/midwife at the earliest for further evaluation to rule out chances of rupture of the amniotic sac (water bag). Ultrasound scan done will also help to confirm the AFI and the fetal wellbeing. Look out for development of other symptoms like abdominal cramps or uterine contractions, abdominal tightening, back pain, fresh bleeding, reduced fetal movements etc. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.