Ok I am in the same boat as you. i am 20 and will be entering nursing school in the fall and I really want someone to answer this question b.c I feel the same way.
Let me tell you my slight difference. I have always loved animals and wanted to be a vet so at 16 i started working for a kennel and after hard work and lots of poop they started to train me as a vet tech. I loved it but at first the blood got to me but I slowly was able to handle it. I passed out one time and got quesy a few other times but I could get through it. I was able to put in IV cathaders.. the hardest part for me, (surgery was a piece of cake) so now I am almost done with my pre-req for my B.S.N and have my interview for nursing school in the spring. However I want someone who is a nurse to tell me that they felt the same way and now they are nursing and it doesn't bother them at all!
As the for the vet thing, i changed majors after failing chem 1 the first time and repeating it and getting a C. I just can't imagine getting a Bio degree, then going in to Vet school. i decided to just love animals on the side. Besides sometimes working in that environment can make you lose appreciation for it! sorry so long...help me PLEASE!!