Is it normal that when i'm around people i get really nervous?

Sounds like you have a bit of social anxiety. It's normal to a certain extent; everyone gets nervous around people, especially strangers, from time to time. Plenty of people have this fear, some even to the point of completely isolating themselves. In extremes, it becomes Social Anxiety Disorder. I had it growing up, fortunately I was able to overcome the anxiety but to this day I'm just not a "people person."
I also know that feeling of thinking people are staring at you; in my case, it's usually because I have tattoos and piercings. However, most of the time people are too busy thinking about what people are thinking about them to even give other people a second thought or glance. But if someone is staring at you, it's probably not negative. Perhaps they think you're attractive or like your outfit that day.
Either way, whether you're just nervous around people or think you may have full-blown S.A.D., try not to let it take control of your life. A lot of people with social anxiety find it's easier to be around familiar people in short doses at first, then strangers in short doses, gradually "building up" to being able to be in public for long periods of time without becoming nervous; sort of like do-it-yourself exposure therapy. There are plenty of resources on the internet about social anxiety, forums to share your experiences and tips on overcoming it if you feel like it'd be helpful. Good luck!

Look we all go through that just find some one more embarrassing than u an pretend they are talking about then ( mean but works )

Thanks you that was really Helpful