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The irritation, pain or discomfort while urinating
could be due to a urinary tract infection
(UTI), which is best treated with antibiotic therapy. To make a diagnosis, you will require both a urine analysis as well as a urine culture examination. The urine analysis will help in suggesting a UTI and the urine culture report will confirm the UTI as well as provide information on the most suitable antibiotic to treat the infection. Please go ahead with the urine culture examination, and accordingly support treatment.
Now coming to the blood along with the stools. This is a sign of a lower gastrointestinal tract bleed. Please consult your doctor regarding the same immediately. The causes for this can be many, for example: parasitic infections, ulcers, etc.
I would ask you not to wait for long and get this investigated. An endoscopic examination would be recommended.
I hope I have provided the information you were seeking. Do write back to me for any further clarifications, I would be happy to help.