2 weeks ago I had a bowel ressection due to crohn's disease where 18cm of bowel had narrowed - since the op I have had abdominal pain when I need to urinate this is the only way I know I need to urinate I am not receving any other sensation to let me know I need to go then when I urinate it stops short then a little more dribbles out I have had a scan which showed my bladder was not emptying properly my doctor thinks it could be caused from the shock of bowel surgery and be a type of cystitis in relation to having crohns and surgery what are your thoughts and how is this fixed?