Addiction is a bizarre thing. Some people are hooked after ONE pill. Immediately. Others can take them with impunity, chronically and never become addicted.
Calm down and think of it this way: 1) If you're aware of the risk, you're already ahead of the ballgame. 2) If you didn't experience immediate euphoria, you're not as likely to get hooked. Some good points made above---particularly the "if you're still having pain, you're probably ok" type of comments, which I agree to some degree with.
Is 3 weeks long enough to get hooked on narcotics? Yes, but probably not, for most people. Is 3 days enough for Cocaine? Damn right. Some psychiatrists studying the biology of addiction claim that some people get withdrawal symptoms from one drink of alcohol.
Remember that guy 'somethin' Christian, a defensive down guy for the Cornhuskers? He took 1 Percocet after a game one time, and was immediately hooked. The euphoria was immense and unbelievably irresistable, by his account. After that one pill, he dedicated the rest of his college years seeking narcotics (Percocet mainly), and now is a total heroin junky, weighs about 160 pounds, and is totally SOL, having had recently attempted suicide.
