I had a hysterectomy after my perm ileo - not the same situation as you and I remember having a LOT of abdominal discomfort with the healing process. I'm sure mine had to do with a lot of scar tissue, etc.
I also wanted to let you know to be patient -- others will chime in on this and hopefully help you out.
Let us know if you have questions that haven't been answered, and indeed, if you are in doubt, call your dr.
Diagnosed with CD in 1979, many resections and meds
Perm Ileostomy July 1984 at Cleveland Clinic
Disease free since surgery