What does this MRI reading mean? (Groin strain)?

Many muscles in and around the pelvic contract when you sneeze, therefore, I would anticipate it being painful when you do so. There is nothing on the report that would indicate any serious pathology, however, the edema in the pubis could certainly be a stress fracture and would be consistent with significant pain. I'd consider using crutches to reduce the weight when you walk on it. You likely don't need to be completely non-weight bearing, but unloading the bone with crutches might be quite helpful.