Vision Problem? I Need A Quick Answer-leaving For Eye Doctor In 1 Hour! ?

I’m not sure if I have astigmatism or not. I’ve noticed that while taking notes during school I get blurry vision. I look down, write, then look back up at the board, and notice my vision is blurred. It usually takes a few seconds for my eyes to focus again. I also frequently get headaches. I don’t know if that has anything to do with the blurred vision, but it is a symptom of astigmatism. Oh, I forgot to mention that I wear contact lenses, and have never had problems when I wore glasses. Do you think its astigmatism, or just the contacts? Or could it be something else?