I have had more than one because the value of the exam is based on the skill of the person doing it. If you don't know the skill of the doc doing it, you don't know how much weight to give it. It's not like an MRI where you can just send the films to another doctor. You are right it is not 100% and nothing is. A biopsy is not 100% nor is a blood test. There is always the posibility of human error involved. I totally understand your distress. You cannot change the realities of this life we are given. It is full of unfairness, uncertainty, incompentence, out-right criminal behavior by medical personnel, insensitivity, just about every negative thing you can think of. The only thing you can do is choose to focus more on the positive things that also co-exist like the caring people on this board, the positive relationships you have with family and/or friends, the small things you do enjoy doing if you allow yourself, etc. I woke up this morning and felt my tongue twitching again like it does basically every day. This symptoms really scares me but what can I really do. It is there. I have been given the basic reassurances but they are not 100%. All I can do is try to enjoy what I can. I am going to walk to get a bagel with my husband this morning. I am going to prepare to teach my students next week. These kids experience the same unfairness and problems I do. Some have had parents killed (one by a drunk driver, the other in a shooting). They have illness (one has had leukemia). Despite these things, I see them smile and laugh as well as cry and struggle to just pick up their books and move along. We are all in this world together. I hope one day we can meet and talk on the other side of this life and maybe get some answers on why it couldn't all be perfect.Krackersones