I've got a cold/sinus problem right now.

I don't have any fever, but my head feels like it's going to explode! Of
course, the fact that I also have slit ventricle syndrome doesn't
help, either. I know you're supposed to drink a lot, but when
I get like this, all I want to do is stay in bed. For some reason,
the pressure is worse when I'm sitting/standing. I'm not sure why, but I've always been like this, so it's nothing new to me.