<s>[INST] Hi im 27 years old recently had to make a trip to the emergency room with terrible back pain and pain in my upper and lower abdominal region. I was told I had a kidney/Urinary tract infection.. That was two weeks ago and im still having awful uncontrollable back pain and now im having brown discharge which I have never had in the past. My pregnancy test  the ER was negative and I have the  Mirena IUD. what could this be and should i return to the emergency room? [/INST] Hello, thanks for using Chat Doctor You did not mention if you did receive treatment for the urinary tract infection you were diagnosed of. If you did not take antibiotics, it is imperative to meet the doctor for a prescription. Brown discharges are not a normal feature, and you need to be investigated for a probable endometriosis or inflammation of the uterine lining with possible removal of the IUD. Hope this helps you. Best regards Chat Doctor.  </s>