What happened?

I know I probably should have told about this a an and a half ago, but whatever.

So it was August of 2014, and about a week into 10th grade, and we're taking notes in class. Suddenly, after I have a few sentences written down, I try to write again, but then for some reason I just can't write anything.

I was able to still focus on what was going on, the lecture and everything, but I just couldn't write anything on the paper. It's like my hands stopped working ou something. However, about a minute ou two later I was able to write again.