history: I have a meeting with my boss in a couple of hours. I have no idea what it's about, so I'm kind of nervous. I have a meeting with my boss in a few hours...
current: The way you wrote that makes it seem like you're anticipating something bad... Do you mind if I ask what you're expecting to happen?
next: See, that's the thing... I have no idea what to expect. That's why I'm so nervous about it.