I have recently started having pain in the right side

Patient: I have recently started having pain in the right side of my stomach, i have been to the hospital and they have found fluid around the pouch of douglas what does this mean ? 3days post of been in hospital the pain is still persists also i recently had a baby and during pregnancy i had alot of vagina swabs when these swabs are sent to the lab do they test for sti’s

Symptoms: Lower stomach pain on right side

Doctor: