I have had two hernia surgeries. today i had an mri, as soon as she turn it on, the mesh started moving and felt like it was coming out of my stomach?

Coming out: Not sure what you felt, but meshes have no metal in them ergo I doubt it was being pulled out of you.

MR safe materials: Magnetizable materials and electronic devices represent potential hazards patients undergoing an MRI. Most metallic biomaterials are now nonferrous and nonmagnetizable. The mesh and clips used in a hernia repair are MR safe and do not poses any known hazards in any MR environment.