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I can understand your problem, and will try to help you the best possible.
Bifurcated stream of urine could possibly be due to urethral stricture, which is one of the commonest causes, but you have mentioned that it is ruled out, but I would suggest you to take a second opinion from an urologist before the stricture/scarringare totally ruled out to be the cause. It is possible that the scarring could be blocking the outlet causing the stream to split and deviate, thus causing the other discomfort. It could also be due to a condition called prostatism, in which an enlarged prostate gland compresses on the urethra causing bifurcation of urine. This condition definitely needs more thorough evaluation to diagnose the cause. I would suggest you to consult with an urologist for the same. You might be need to do certain diagnostic radiological tests such as the urethral imaging (X-rays or ultrasound) and sometimes urethroscopy, uroflometry, and other urodynamic tests with an advise from the urologist. These tests will be able to identify the level of obstruction of the urine flow causing it to bifurcate and also the cause for such obstruction. The urologist will mostly diagnose a treatable problem, and it will be treated accordingly by him. You will need to go through a physical exam and a set of radiological tests to diagnose this problem. And I’m sure with these test done and urologist help you will be able to get relief from this problem.
Hope this helps. Feel free to ask if you have further queries. Thank you.