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Fluid in POD (Pouch of Douglas) can be due to blood, pus or other fluids. The causes could vary from ovulation, irritable bowel syndrome, and reproductive concerns like ectopic pregnancy, rupture of ovarian cysts, Pelvic inflammatory disease (PID) and other conditions that can cause fluid to collect in the POD. The exact cause can only be made out after careful evaluation and examination of the fluid along with correlation with your symptoms and examination findings. Visit your doctor/gynecologist for further evaluation, discussion of your investigation results and further assistance. Treatment as appropriate (based on examination findings and investigations results) would be started to help you control the symptoms. Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle. If infective cause is detected, and if you are sexually active, get your partner also treated simultaneously to prevent chances of re-infection, and avoid having intercourse while being on treatment.
Take care.