Been there... done that... have the t-shirt somewhere...
I had all four taken out at the same time as well. I think I was about 19. I don't remember the pain so much as the pain-killers. They made me loopy as hell!
I also seem to recall trying to eat cheese burgers and pizza pretty early on and failing miserably.
Oh and one last thing I remember, my doctors name... Doctor Cutwright. I kid you not and cut-right he did.
Hang in there Pandy, now you will want to watch out for "dry socket" I think they call it?
P.S.
I will second Bianca's advice about comparing tooth extraction to labor. I was present while my wife did all the work to bring our two into the world. I can tell you I would rather have all my teeth removed one at a time without gas, pills or liquor before I would have swapped places.
*tips tricorn to all the mothers out there*
If the miracle of birth had been given to man and not woman the human race would have died out LONG ago!