I know how you feel. I started pre-vet, then i didnt know, then I thought linguistics or history/philosophy, and now I am at Zoology with pretty strong intentions on vet school. I will only be a sophomore in the fall though, so i have time. I just read an article about the new full time vet at John Ball Zoo and I think it solidified my thoughts. I want to be a vet. Anyway, good luck with everything.