Detoxing!!!!help!!!?

my freind has challanged me to go 2 weeks with out narcotics, to see if he's right and i am an adict. it's been fourty hours know and my leg is killing me (i had an infarction and lost half of the thigh muscle in my right leg. due to the time delay in making the diegnosis i still expereance chronic pain). i've treid everything from resting it, to smashing my hand in with my car door. but honestly i really don't know what to do... any help or advise....p.s my hand hurts too. HELP