When I blush, only certain places on my face hoes red. is that normal?

Well I always blush for no reason and it goes red on my right cheek, my nose, and around my nose on my left side. Is that normal? It's humiliating because my face looks all blotchy, then when people look at me I go redder. I used to never blush before, why is it only starting now?!? I'm getting really selfconcious about it. How can I control it or make it less noticeable?