pain in my right groin going around my back

If my insurance approves should I get this last MRI with the Valsalva technique to see if I have a hernia? As I said previously, the only time a hernia in my right groin was seen was in the CT scan from Sept 2012 on the actual image by the hernia Dr. not the radiologist. All of this pain in my right groin/side wrapping around my back started the day after the Colonscopy Dec.12, 2013. I never had pain on my right side before or lower back. I would appreciate any and all ideas, opinions, or thoughts you might have as to what could have happened during this colonscopy that would cause this. I also have lots of gas and sometimes the pain is relieved abit after passing gas and going to the bathroom.
thank-you for your input, i am really confused as to what to do next and just want to feel like I did before the colonoscopy procedure.