You all are so kind to share your similar experiences. I realize now some very important things that could have helped me.
My topic was about weapons created during WWI and I really didn't feel comfortable with the subject. I even jokingly told the class before I started if they had any questions afterwards about the subject not to ask me.
Another thing I realize now is that I should have practiced, practiced, practiced reading my paper! I figured reading it would be a breeze and I didn't need to. I won't do that again.
I have given a couple of presentations to this same class before and practically had my lines memorized and wasn't this scared. So I know it makes a difference. I just wish I could be like others who got up and talked so easy and appeared unafraid.
Thanks for all your help!