 [ Symptoms ] when i lay flat on my back i get a a swimmy feeling like i am on the down side of a roller coaster on set was after a surgery i thought that i would go away i have been dealing with this for years now its not anxiety [ Disease ] hi a very quick research come up with this just goole this brandt daroff exercises for bppv see how you get on may be the cure you have been looking for also have a look at this link its fron the uk is nhs <link> just copy into google to open and read and this won on vertigo could help you understand your problem <link> again just copy into google to open and read do hoped this is helpful good luck