Help!

Idk where to post this but I just figured out that I’ll have to get blood drawn to see if I’m anemic. I never knew that this was necessary. When I learned this I literally started crying. I start hyperventilating if I just hear the word injection, and have a breakdown when I actually need one. No matter what i do (deep breaths, not looking at the needle, holding someone’s hand) I just cannot relax. And don’t say that shots don’t hurt, because they hurt for the next 2 days for me. I really don’t know how I’m going to be able to get my blood drawn, I don’t think that I’m mentally strong enough to do it. Any tips? Please help me here, I’m really freaking out.