Golly, the Toribash community makes me proud sometimes.
Anyway, if you EVER find yourself substance-reliant again, just think about the effects it has on your life, and the people you disappoint.
You've always got us to count on eh?
EDIT: Sounds like you've got withdrawal symptoms, the hardest time of quitting.
Basically the body is expelling all the traces of the drug from your body, occasionally this causes side-effects. For example when you quit smoking, you may start coughing alot, and have phlegm and such.