<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have had a 2 day course of antibiotics to treat a water infection, the pains seemed to ease of but have now come back again. I have also been constipated over the last 6 days, I have had 2 bowel movements but am in lots of abdominal pain and pain in my lower back. Could the symptoms be related?  <response>: Hello! Welcome to Chat Doctor. Pain in abdomen lower back suggests either musculoskeletal pain or urinary tract stone related pain. Do you have any urinary complaintsfever? Stone in ureter causes obstruction to urine outflow smooth muscles in ureter contract excessively to overcome this obstruction and so is the severe pain. In such cases in my clinic, I advise ultrasound abdomen pelvis, X-ray PUB, urine stool routine, CBC, BSL, renal function tests. Treatment is done accordingly. Chat Doctor. Consult your doctor for antibiotics, diuretics, smooth muscle relaxants like 