Can I still become a vet?

Never the most well behaved student.. Detentions, 2 suspensions each lasting 1 day when I was 14&15.. But clever, on the Eco committee and in the Gifted and Talented group for academic students. Is there any chance I could still become a vet if I turn over a new leaf and stay on the straight and narrow? Or does the bad outweigh the good?