Mri medicine not a fluke

Had to have an mri of my abdomen today. Last time I had it done was they were checking me out from a bad car accident 13 years ago. It only took a few minutes from when they fame me the medicine for the machine that I vomited. I chalked it up to having hit my head pretty hard in the accident. Today, no head or body trauma, just the doctor wanting to check something out and again, a few minutes of receiving the medicine, I vomited. After everything was done and stomach settle, I had breakfast/lunch. Unfortunately,  it's playing havoc with my stomach right now.