If you're still not sure, then try maybe getting a job somewhere you think you'd like to work; i.e. if yo uthink you want to be a vet, maybe volunteer at an office or something. Obviously not the same thing as actually being a vet; but would help you get a feel for what its like.

As for tuition - I'm in grad school right now and I can definately relate! But there is money out there for you to go to school. Don't let that be the hurdle that keeps you from pursuing your dreams. Good luck!