I am a 67 year old male and have had recent problems with urination. My main problem is at night. The first time I get up to urinate, I need to sit for and extended period of time (sometimes 15-30 minutes) before I can start to urinate. During this time, I seem to have a lot of gas symptoms. I have lower abdominal pain and cannot start a urine stream. After numerous belches, I can slowly start to urinate. Only after several minutes of start and stop, I am able to empty my bladder with a rather long and steady stream of urine. If I get up a second time during the night, I do not seem to repeat the problem. It only seems to occur during the first time I get up. Any thoughts on what might be causing this?