Have iud. xrayed for kidneys stones from having sever ab&back pain. now brown,,blk discharge. fatigue, nausea, same pains. started mid cycle. wth?

PID: There could be many possibilities for pain in your pelvis region. Pelvic inflammatory disease is highly likely as you are experiencing a vaginal discharge and abdominal and back pain. Theres always a risk of a missed pregnancy or ectopic pregnancy as well Please see you nearest Accident and Medical clinic immediately for further evaluation and management.