Knowing when I have to speak

Knowing when I have to speak When I’m in a class and we have to speak it makes it so much worse for me when I know when I have to talk. I can just feel the stutters just forming in my mouth and I’m trying to think of words that doesn’t make me stutter. My heart feels like it’s going a mile a minute and just feels like it’s going even faster when it’s almost time for me to speak. Even calming myself down doesn’t work. All these feelings go away after I’m done but I’m just so sick of it.