Labyssum, I thought I was the only person to worry about those things you listed (apart from the pieced lip, lol) ... i didn't realise it was anxiety. Doesn't everyone worry about planes crashing and walkers being attacked? Apparently not.

As for your lip, I imagine you'll have received some information on aftercare when you got it pieced, did you? if not there must be loads of information online about it. Some info here about it:

http://www.safepiercing.org/oralAftercare.html

As for the other stuff, I suppose you've got to wait and hope it doesn't happen