I cant live like this

I cant live like this Im 16, sophomore in high school. I have a pretty severe stutter, except, its not like the typical "s-s-stutter", I literally cant say any words at all when it happens. Im saying a sentence, (or reading something) and if one of the words triggers it then its over. I cant fucking keep this up. Everytime i have to read something out loud in class it happens, everyone looks at me like im retarded and laughs. Even the fucking teachers. I have like 3 presentations coming up this month, and i just cant fucking do this. I wish a car ran me over or something so it wouldnt be suicide and my family wouldnt blame themselves for it.