I feel horrible! Need help so bad!!! My mind is messed up!?

I think you need to keep in mind that nearly all people hate public speaking. It's pretty unusual to come across a person who doesn't get nervous, whose voice doesn't fluctuate or stutter, who doesn't get sweaty palms or erflies in their stomach. I have no doubt that if anyone did notice your nervousness, that they felt nothing but sympathy and "I've been there!" Most people, except maybe people who give public presentations for a living, feel the same way you do to some degree. We've all been there!