Reoccurring Dreams

I find it interesting that I keep having this reoccurring dream.

It goes something like this: in order to earn my college degree I have to pass a certain math class. But I don't know or understand the math. In some dreams I'm faced with the test and I completely do not understand it. (At least I'm not naked.) 

Then I'll wake up and be relieved, knowing that I have my degree (since 1994) and I don't have to take any math classes again. 

I have taken a lot of math classes in college: a year of calculus and one class of deferential equations. I took a fluid dynamics class that had me doing differential equations in my sleep, literally. Don't ask me to do differential equations now, though.

But I still have this dream/nightmare. It's almost as bad as the dreams I have about being back in the corporate world.

Do you have reoccurring dreams? Do they upset you? Let me know in the comments below.