Congrats JimThins! I went through a 4-day funk after I tossed my last can. I didn't really get grouchy or anything, but my head was fuzzy, the world moved in slow-motion, I was tired, and had this intense sadness come over me (I think those four days are about as close as I'll ever come to experiencing PMS!) I carried on with my days as much as I possibly could and you should too: STAY BUSY! At night I would literally lay on the couch and eat bon-bons and cry while watching WWII documentaries until I got bored enough and fell asleep (okay, just joking about the WWII documentaries.) It was awful, just completely awful. Buy having been through it (two years ago) I can tell you this:
1) one morning, maybe around day four or five, you'll wake up and the world will be brighter. You'll realize that your head is clear, you're not drowsy or sad, and the PMS symptoms have worn off. You haven't won yet, but those scary initial "withdraws" you always hear people talk about are pretty much over.
2) be thankful for the misery you're experiencing, embrace it, and remember just how miserable you are right now. If you at some point cave and get yourself re-hooked to the dip then at some point down the road you'll have to go through this all over again. Would you really want to put yourself through this funk/PMS again?
Good luck to you!