one of my close friends is a gp and before I started in 2009 she was against it, however when she saw the positive change in my attitude, great weight loss and no evidence of any suffering she changed her mind!
Give it a try, I wish I'd discovered it sooner than I did, and returned to it quicker than I did, after another failed sw attempt in September(classes too long and I can't do portion control) I have sworn NEVER to go back to a slimmming club, I only went to keep a friend company in Sept, then she only came once!
Come on board,look forward to hearing about your losses.
Mrs T x