Would I tell? Yes. If he's worth a nickel he'll be supportive and impressed that you're tackling this problem head-on.
I'm certainly no addiction expert but I have worked in a methadone program in the past. The funny thing is that the people took well to being tapered to almost zero, but going from "almost zero" to "completely zero" was where we lost many of them. There was too much fear in a life completely without the drug.
Hydrocodone is a quintessential woman's drug. Leaves no nasty track marks, and at least at first seems to improve functioning and not impair it. It appears to give us that "boost" of energy with a "calm" mind that's so elusive to many who try to juggle motherhood, wife-hood and work. It takes a while for the drug to show its true face, and by that a time most people are already in its clutches.
I took it myself for a few days after some dental work. Noticed the mood-lifting and mind-calming effect, and thought .... dangerous. Very very dangerous. That it is a Schedule III as a compound drug is beyond my comprehension.
Go do the rehab, perhaps get on an antidepressant, and then whatever you do change your routines. People who do something different with their time than when they were using seem to have an easier time forging new brain circuits.
