What the above said. It might be best to think of at least one more reality check that could be useful to you, and if not, then more. You can either use one of the more popular RCs or you can make something up ('cause, I mean, everything's possible in the dream world).

I do have a suggestion, though: For now on, be sure to be on a look out for people who talk to you about anything you did in your dreams, lucid or non-lucid. Since it seems like this is the first experience you've had like this, it could be a one-time thing--or it could be something that is going to happen every time you have a false awakening. Never know, and it's better to be safe than sorry.

What are the other questions?