Random embarrassing thoughts?

Okay, so I have this problem. I could be doing anything; work in class, surfing the web, talking to friends, etc., and out of the blue, I'll think of embarrassing moments I've went through in my life or imagine a scenario that would be devastatingly embarrassing (something that I haven't actually went through). And I end up feeling stupid and hopeless. My face begins to feel very hot, too.

It doesn't just happen randomly, but it also happens when I'm at "the scene of the crime." for example, just a few days ago, I was paired up with the girl I like as a partner for an activity we were doing in class, and I suddenly remembered something stupid that I did around her. It was something that happened last year. Then, after that, I just couldn't look her on the face without feeling ashamed.

I hate embarrassment. I don't participate in class because I fear that I'll say something stupid and that everyone will laugh at me... Stuff like that has happened many times in the past, an still does. Because I fear embarrassment so much, I'm also reluctant to do speeches and presentations.

I've never heard of anyone else having the same problem, is this strange? It just hurts my self-esteem and already poor social skills. :(

Do you think it's normal?

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