That must have been so frustrating to have to get so many different opinions before getting the correct diagnosis. I think my option now is to go back to my family doctor. He's been my doctor for about 18 years now and i have a pretty good relationship with him - he too can be very dismissive at times but i can call him out on it. He may not agree with a referral elsewhere but if it will make me feel better or give me peace of mind, he'd probably be willing to do it.