In my experience, it was a perforation. Mine was very small but it was the precursor to my first ileo. The ileo was placed to bypass the 'hole' that was too small to be visible on film but was filling my abdomen with poop
I only had it for 3 months for the bowel to heal (combined with antibiotics).
Are you on antibiotics? A couple of weeks is a long time to not see an improvement. Can you get a second opinion? Push your doctor to do something about
it? don't let this go on too long before something is done!!