I said the same thing as I neared the end of my first year.
I honestly wouldn't repeat vet school now even if I had to do it to keep my license and it was free. Like, even just looking at the difference in my face from my first year ID badge pic to my 4th year class composite pic...damn. It really drains the life force from you, not a lot compares to professional school imo. So it's okay and normal to feel all the things you're feeling because it really is a sucky four year period of your life. The good news is that it really does go by fast. And then life after vet school starts going by really fast