help with this problem

is there anyone that can help me with the problem i have i had colon resection 2 1/2 years ago and i could not urinate after so they said it was my prostate had prostate surgery did not not work i am self cathering my problem is i have the urge to urinate but cannnot go whitch is driving me crazy the doctors feel if i have surgery on my prostate a gain and fit me with a spc the urge will go away the injury was caused by the colon surgery is there anyone else with this problem who can help me i had to go to a size 12 catheter because i could not get a 16 in anymore lot of pain i am geting prostate and spc surgery on 7/27/2011 with the self cathetering i had only one infection in 2 1/2 years can i expect more infection i am 66 year old male my name is joe i would appreciate any feedback i have no other medical problems