I had this procedure done. I told both the cardiologist and anesthesia personnel that I do not want to be in pain. They increased sedation when they were inserting the catheter and allowed me to awaken more when needing to exercise. Once during the procedure I remember saying, "I'm too awake and it hurts." I was immediately put under again. I am so sorry you had this experience. My procedure was done at Mayo Rochester which to me, is the best medical center I have ever been to. I live in Florida and traveled for an assessment and diagnosis. I hope your pain resolves and that they were able to give you important data after going through this.