Urinating the bed. Discomfort in lower abdomen. Feeling of fullness.?

I was wondering if anyone else has had problems such as those listed. Urinating the bed (suddenly out of the blue, for no reason), Discomfort in lower abdomen, Feeling of fullness even after having gone to the bathroom. Dripping, dont feel quite like youre finished urinating.

I have suffered from constipation for years, but now am afraid from the symptoms that I have that I may possibly have prostate cancer or another type of disorder that could cause these symptoms. WebMd says that some of these symptoms do go along with signs of prostate cancer. I was thinking either colon cancer or prostate cancer as the culprit.

I have only urinated the bed 2 times since being an adult and both times were due to not feeling quite 'void' of all urine. I make it a habit to go to the bathroom just before bed, but am still usually awakened at least 4 times a night to urinate.

This last episode of incontinence was not even noticeable until i arose and saw that my underwear were wet. I didnt even know that I had urinated in the bed.

Anyone else ever had this happen to them???? Any ideas what may cause this to happen?

I am a 38 year old male. Healthy except for some bones that were broken as a kid and which I do take pain medication for on occasion.

Thanks Much For All of the Help You guys Can Give!

Mark