Hi Anna, thanks for your question. I have read it and understand your concerns. It would help if you told us about your waterworks and bowel habits and whether you are sexually active or not. Answer: There could be a number of explanations to your problem. 1. The pain might be originating from the structures of the lower spine such as, vertebral joints and ligaments, muscles and tendons or trapped nerve. 2. It might be due to inflammation or infection in the left ovary or Fallopian tube e.g. pelvic inflammatory disease (PID) etc. Are you sexually active and in a stable relationship?? Any chance of pregnancy?? 3. Condition of the bowel such as diverticulitis or impacted faeces due to constipation could also cause pain. Are your bowel habits regular and normal?? 4. Or maybe it is arising from urinary bladder or above. How is your waterworks? any dysuria, frequency, urgency etc.?? Answers to the above questions would guide further management. It would be advisable that you see a doctor who would perform a physical examination and if needed would run some tests on you and then treat you accordingly. Because you are having sever pain, I would recommend that you take Paracetamol and go to the ER. Hope this helps. Please do not hesitate to ask for any further clarification.