WHAT CAUSES A BEARING DOWN FEELING IN THE RECTUM WHEN YOU HAVE AN ILEOSTOMY?????

 HI DOES ANYBODY HAVE ANY INFORMATION REGARDING A CONSTANT PUSHING AND BEARING DOWN FEELING IN THE ANUS?? I HAVE HAD MY ILEOSTOMY FOR 8YRS NOW AND SINCE MY LAST SURGERY 5MTHS AGO FOR A HERNIA REPAIR AND A RE-FASHIONING OF MY STOMA I HAVE CONSTANTLY GOT A PUSHING DOWN FEELING IN THE ANUS LIKE I HAVE TO EVACUATE SOMETHING THAT MAYBE IN THERE?? DOES ANYONE ELSE SUFFER FROM THIS?? PLS HELP AS AM AT MY WIT'S END. ROSE-BUD40. 

i dont know what causes it, i have it sometimes. i find that if i get where i have to pee really bad it gets worse.
But if i sit on the toilet for a minute or two it usually goes away.