It feels like I'm having hot flashes.. but I'm 16!?

I recently got a new job, and when I was learning the register I was screwing up alot, the first day I was on register my manager got mad at me and I felt like i was gonna cry. Then i freaked out and did cry.. that was embarring but then I thought it might have been a panic attack. Then at school lately I've been blushing really badly generally if somebody just talks to me! And when I'm working on projects and I don't know what to do I start burning up and can feel my face getting red, it feels like I'm going through menopause! These situations make me want to quit my job and never talk to anyone. What can I do to make this stop? Or at least subside so I don't feel like a freak when I'm working or at school.