My face turns bright red?

My face always turns bright red when I talk to people..and I can always feel it coming and when it turns red I can feel it and it just turns ever more red because I'm embarrassed about it :( i don't know how to stop it, it happens on a daily basis when I'm talking to new people or even people I know. People think I'm blushing when I talk to them but I'm not!! My face always gets red when I'm nervous or in a social situation and I try and avoid talking to people because of it :( it's been making me feel really depressed to the point where I can't even go out places. I've never been like this. Any advice??