Is there something i can do to stop from becoming uneasy, dizzy, and lightheaded around blood? i recently started at a vet clinic and i became lightheaded and dizzy when watching a vet tech put a catheter in a dog.

This : This will go away after a while. It is a very common occurrence when individuals first start working in health care. You can try to "densensitize" yourself to it; there are varying ways to do it. When you are at home, think about different situations and how you would handle it. Also give yourself something to think about while it happens, what i think about is that we are helping this patient, even though it looks like we are hurting them. If you felt light-headed or think your going to faint though, sit down immediately and put your head between your legs so you don't faint. Everyone will understand and help you through this.

Phobia: Consider Cognitive Behavioral therapy, Behavioral Therapy, psychotherapy, Exposure therapy or hypnosis to deal with your fears.