Ever since I started this year, things have just seemed... Well, hard. I'm doing worse in school than I usually do, mainly because things just seem harder to grasp now, for some reason. I find that as hard as I try, I can't really pay attention. I focus, then in twenty or so minutes, I realize that I've been day dreaming. I got a bunch of lower end Bs and a few mid to high As last grading period, which, honestly, is pretty bad for me. Do I have some kind of a learning disability that just hasn't shown itself until lately? What's wrong?