Hello dear I understand your concern Stomach pain and blood in urine could be due to the UTI/cystitis/kidney infection, any growth in the urinary tract like tumor, stone, inflammation. I would suggest to consult the urologist and undergo urine routine, microscopic test, Culture & sensitivity test and USG scan, cystoscopy if needed to confirm the cause. Doctor will give following advises: Antibiotic according the test result Tablet pyridium Drink plenty of water and juice of cranberry, orange and pineapple. Do not delay in empty the bladder and empty it completely. Other specific treatment will depend on the tests result and cause. Avoid stress, take healthy diet, do regular exercise. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar