Anemia: do I need a medical bracelet for it?

I have anemia, and im 15. I recently found this out but im a vegetarian, which obviously explains my anemia, and i currently have a medical bracelet for a penecillin allergy. It didn't even occur to me that anemia should be on a medical bracelet, but should it? I have to take iron supplements every day: around 100mg (which is about 7x what 'normal' people have to take). I was just wondering if you have to be a certain "amount" of anemic to get an anemia medical bracelet. Also if I do need to get that engraved on my current one, why? Is it because i have a chance of fainting if my anemia goes untreated, or what? Thanks!