I am having trouble urinating and was wondering if this might be phsychological perhaps. It has been going on now for about one week--I have also had a head cold during that time as well and have been treating it with musinex. I notice that when I go to urinate, I only can do a small stream and very little comes out. However, after I masterbate and ejaculate, that my urine flow is back to normal--at least for a few hours. I am woken up at night coughing from my cold and then have to go to the bathroom--I go to urinate and nothing or very little. Am I just too tired from not getting enough sleep? Not quite sure--I have no pain except when I go to urinate and this pain is only at the tip of my penis like I am subconsiously trying to hold it in--similar to being on a long drive and looking for a bathroom along the way. I am 58 years old, taking lisinapril for blood pressure, a statin for cholesterol, and one asperin a day. I have been taking this for a number of years with no problems. So, am wondering if I am too stressed out from work, or just too tired, or what? Can you shed some light on my present and hopefully short lived problem? Sometimes when I talk to myself and attempt to relax, then I can get a small stream to come out for a few seconds, then it stops once again. This goes on for about 4 to 6 times a night.
Thank you in advance for any advise you might have for me.

Optional Information:
Gender: Male
Age: nothing except talking to myself