ADD?

So I am just sitting here at home before school waiting for a email from my professor about the midterm I'm supposed to write this afternoon online and I'm trying to study.  I think that their may possibly be something wrong with my attention span when I can only study like ten flash cards at a time before I find myself doing something completely different. Like writing on my blog, or doing my dishes. I hate doing the dishes but apparently I hate it less than studying for my midterms which are actually important. Does anyone know how to test for ADD....