my name is linda. i've had the introductory class, and 2 appointments, i've registered for the 6 nutritional classes ($160), have 3 appointments set for next month, have to have a sleep study done, waiting for approval from my pcp for that.i have to lose 23lbs. my surgeon is dr. goldenburg from cmc hospital in manchester. i have medicare (primary ins.) and anthem (2nd). i have so many questions, but i've been reading the posts and have had some questions answered. do i need pre-approval from medicare? what is the recovery time for the surgery? thank you