I took Zyprexa for 3 nights please help!?

OK I just recently hit my goal Weight I'm 5'8".5 and weigh 160 so I go to this new Doctor who decides that I'm bipolar and I know Im not its just I am very stressed out and have very high anxiety he said NO! your bi-polar I'm putting you on zyshita I said whatever I also have degenerative disc disease and scoliosis I am in constant pain! and I'm only 24 I know my previous weight may have had something to do with the pain but It gets worse the thinner I get anyways I went from a size 40 jean to a 29-30 maybe 32 depending on who makes them now Ive heard Zypreza makes you gain a **** load of weight I only took it for 3 nights last night I flushed the rest down the crapper I would rather have Anorexia Nervousa which is now what everyone is saying I have now! because I worry about what I eat and everything but I am sorry I'm not going to take a medication that makes me get up in the middle of the night and go downstairs and eat Ice cream I would touch Ice Cream now with a ten foot pool what is this **** doing to me Seriously the first night I slept fine second night my Grandfather said I went downstairs an ate like 4 little Debbie snack cakes the next night its cake and I don't remember doing these things is this normal? NO!!!!!