Suggest Treatment For Joints Pain Caused After Having An Abortion

hello,doc im a girl of 23 yrs ,5yrs back did abortion and since then ive been having joint pains (knees,lower back,hand joints ,head) and i had syphils but got treated .since then i still have pain cai it be PID? WHAT MEDICINE SHOULD I USE B;COZ IVE BEEN IN MANY HOSPITALS AND THEY TELL ME MY PELVIC IS OKEY ,I DIDI ULTRASOUND WAS TOLD IM OKEY? WHAT SHOULD I DO?