pain in my right groin going around my back

I have had 3MRI’s , 7 sonograms and have been to a hernia specialist 3 times, she cannot feel a hernia. I have also been to a colon surgeon that looked at the actual CT scan from Sept 2012 and was not sure what he was looking at was an actual hernia. The hernia surgeon viewed my Dec. 2013 CT scan with oral contrast from the ER, I brought the actual pictures on the disc, she did not see a hernia there either. ALl of this pain on my right side around my back started after the colonoscopy Dec 11th. I have lots of gas and pain related to eating and going to the bathroom too. They wanted to do another CT scan (#8 in less then 2 years) I am afraid of the radiation. I had an MRI enterography, an MRI or my right side and one of my back which showed a bulging disc. I am very confused.
I had a left groin hernia in 2001, it was bulging out of me, I had it fixed with the mesh. I wake up in pain everyday, it is hard to eat, have tons of gas and I need a heating pad constantly. The colon surgeon now suggests I go for Pelvic Floor therapy. i am very confused here, after seeing all of these Dr.s. Is there a specific MRI I could get or an X-ray that would show if this is an inguinal or femoral hernia? I had 7 Ultrasounds and nothing has shown up. The MRI enterography was very in depth and that showed nothing. I am willing to see another Dr. and go for another MRI, just not sure what Dr. to see adn what test to ask for? I would really appreciate it if you could point me in a direction. I live in nyc. thank-you