Hi,
As you told about yourself that that you have pain while doing exercise so I would like to ask you a few questions  - 
1. Do you use a proper support for your testes while doing exercise ?  The pain that you described I have commonly observed in people with prostatitis in which your urine profile may appear normal.
2. Do you have any problem in doing sex,or during erection ?
3. Have you ever passed blood through urethra ? 
4. how frequently do you go to pass urine ?
5. How commonly do you  ... 
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