How to get over the fear of blood?

I am petrified of blood. Even saying it makes me squirm. I start breathing hard, my legs get tingly, so I start shaking my legs because they feel weird, and I feel like crying. I have trouble even saying the word and I always imagine really bad situations when people talk about blood. I know that most people say to face your fears but that is a little bit difficult with mine. Does anyone have any suggestions about how to get over it??? I hate how I always freak out when the word comes up! Thanks!