Ask yourself this question: Is it time to change GP's? The number one reason to seek a new healthcare provider is when the treatment you are receiving is not working.The patient needs to care about him/herself first.
If you have decided to change your GP/doctor, that is great news! You are on the road to recovery. You may have to change 10 times before you find someone that is on the same 'page' as you, which is fine. Do what you have to do, for YOU.
After you have located a GP/doctor that you are happy with, start asking questions. There are some that HATE it when patients come in 'clued up' and then you have others that welcome the informed patient. I would personally go with the latter! It does make all the difference in the world to feel like you actually have a say in your care! Good Luck & Good Health!