I had 3 of mine out about a month ago!
If you're going under, then you've really nothing to worry about. You'll have a little scratch when they give you the anaesthetic, and you'll wake up in the recovery room and be home by the end of the day! If you're done in the morning or early afternoon of course.
You may well find that you'll get something called a 'dry socket'. It's where the hole keeps oozing and won't heal up. Go to your dentist and he'll wash you out with some antiseptic and fill it with a bit of dressing - it looks a bit like the tobacco you use in the roll your own sort!
Expect your face to swell up like you've gone 10 rounds with Mike Tyson though...!
You'll probably get a minor infection so try and get to the doctors for some antibiotics 4-days after you have the op.
Ooops, just read you're not going into hospital. Still, don't worry - you'll be fine!