I'm scared to fall off of a skateboard?

I have a plan b skateboard and its really good. and i wanna learn how to skate. the only thing is that i'm reallly really really scared to fall! i've been skating for like a month now and all i can do is ride. i haven't fallen once. and i'm realy scared that i'm going to. i haven't even learned how to ollie yet. any advice? thanks :D