Sue, I'm sorry to hear about your 3rd time. I understand what Charm says about magic diets, I am also a strong believer in classic medicine. However, I also believe that our mood and outlook play a big part in our health. If going to the retreat will provide you with the support you need then I think you should do it. Like Charm said, if you believe it is helping I think it will. Once you feel that you have some control you will feel better.
Please let us know how you are doing.