Confusion

I hate it when this happens. I've been randomly giggling or crying all day, but not because I've been happy or sad. As in, I'll just be sitting there doing something and tears will start pouring out, even though I'm not upset. Or likewise I'll start giggling for no reason. I can't help but wonder what the hell causes that. It doesn't seem like a bipolar symptom, though I guess it could be. It usually happens just before I have an episode, so there's probably some connection there.