If your patch change day is on a Wednesday and your patch fell off on a monday and a you applied a new that same day do you have to change your patch that of your patch change day?

If your patch can't be reapplied (and as long as it isn't folded over on itself it can be with medical tape or a Bioclusive bandage) then yes, you apply a new patch to replace the one that came off.

Typically you won't start feeling withdrawals for several hours. If you have one of those doctors who isn't forgiving on your patch quantities, you can always use your breakthrough meds to cover the period you lost between patches.

After many years, I learned to bank extra patches to deal with such problems (try to stretch the period between patches using breakthrough meds). The key is really to make sure they stay applied - Skin Prep is a good product to help adhesion, but cleaning the skin properly is the best. Though the literature tells you not to use alcohol, what they don't want you to do is use it and then apply the patch, because Isopropyl leaves a film. You can use it as long as you rinse the area and dry it, then apply a patch.

Selecting a good spot on the body helps also. I've always avoided my torso since the skin tends to stretch more with activity, and that's the cause of most patch adhesion failures. Use the bicep of your arm - it's wide enough and flat enough, and doesn't get that much flexing during regular activity. Swap arms during your patch change.