Urologist recommendations..

Hello all, I am Male having frequent urination issues from 3 years. I have to pee every ~1 hr irrespective of my water intake. I feel the urge to pee on the tip of penis and the urge slowly increases as time passes so that I have to pee immediately and my stomach becomes bloated if I don't. Sometimes I don't feel the urge to pee for couple of hours but when I pee my urine becomes yellowish in color, the more yellowish the more time I don't pee.. I consulted a doctor at AINU. He did some tests and concluded that it is a psychological problem of mine and the cause for it is my desk job, stress and less movement. He suggested some medication, less water intake but it didn't help me much. It did increase my pee interval to ~1and half hour but the urge at the tip of my penis didn't go away. I tried explaining all this to the doc but he is convinced that my job, stress are the causes for the issues. Please suggest a good urologist to get this checked. The issue is impacting my daily activities and in winters like this i am having the urges to pee every half hour or so and it's tyring and annoying. Thanks.