I'm 49/ male. I usually urinate more than the average. Too much! Also at night. For years. Now I have this suttle pain around the colon area...?

Prostate+Urine check. Several things can cause your symptoms, and the one i'd be most suspicious of is prostate enlargement. This can cause all of the symptoms you describe, is detectible on exam by a doctor, and is usually benign and treatable with medications. Sometimes infections can cause this too, so i'd check the urine too. Time to see a primary care doc or urologist.