It's not my place to say MB, but finish those last two shifts. It's didnt all that horrible, 'cept for the travel. Might give you a good rep with the temp jobs place? (incase you have a need for them in the future - or do they really even care?)
Manta, Mrs Dragon and myself quit smoking 19 years ago on April 16th. Mrs D chewed the nicotine gum right up until about a year ago.... Her doctor said it was OK as it's better than smoking.
ConfusedGuy, I slept alot during my first few months and I loved it! embrace the sleep , go with the flow, your body is recovering while you sleep.