oh geez michelle - so many questions, and i have so few REAL answers!!!! and the best thing i can tell you is to ask your doc LOTS of questions. first off, about the diet history - if you ever told a doc about it, it counts. if you've bought exercise equipment or joined a gym, it counts. if you bought, say, exercise tapes or diet books, that MIGHT count as well. you'll just have to talk with your doc about the rules and the best way for YOU to meet the requirements.
as for the pre-op appts. it varies from doc to doc. but bottom line, you'll have plenty of notice - it takes anywhere from 2-4 weeks to get appts with some specialists in some parts of the country [and now that i've written that, let's watch you line up appts back to back to back!!!!
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and the referrals generally depend on your health. i had to go to a pulmonologist, cardiologist, and a vascular disease specialist, but most people don't. at the minimum, expect to see a nutritionist and a psychologist. again, your doc will tell you next week what has to happen.
keep breathing!!!! don't panic just yet. you CAN get through this. HONEST!!!!