Welcome to ehealth! (I'm sorry it has to be under these conditions that you have found us)
It is very easy for someone to become dependent on narcotics and not even realize it. And unfortunately, it is very common for doctors to not tell you that it is a common occurance.
What strength hydocodone were you on?
Your doctor is right, the only way to come off of these meds, once your body is already dependant, is to taper off. Which is why you should never go off meds with out speaking to your doctor first. (I understand this is not the case here, I just need to say it for the sake of the argument) You really never know what meds you will have a reaction to. Some people that are on stong meds (oxicontin) can actually die from the withdrawls. They should take you down. (after your surgery) in small levels every week to every month until you are off of them completely.
You are not alone, many peolpe experience this.
I hope you are feeling better soon.