You cop a hold of yourself and realise it's fine - if you experience uncomfortable symptoms of discontinuation, you can switch out a couple of doses for plain paracetamol, leaving you last thing at night and in the morning to get you moving, take 1 at a time instead of 2, have 6 instead of 8 by stretching out the intervals, that kind of thing.
But with just a week, you're unlikely to notice much at all.
The point is that you need to get moving, as prolonged immobility makes it more likely the back pain will worsen if it's muscular in nature. The painkillers for the most intense part are fine, they give you immediate relief and then it's back to paracetamol and gentle mobilisation.
I resent the shit my mother put me through from her long term addictions to prescription medication where she was utterly taking them past the point of therapeutic use because of the fluffy euphoria, as it put me off having medication I actually needed for certain periods in my life for years.
Now, it's more I'm pissed off if I need to take something again with the main question being 'and how soon can I expect to be stopping them again?'. It's irritating to give it any real thought, as the effects from taking something for 18 months are inconvenient, but it enables me to take advantage of physio, keep working, that kind of thing, as unmedicated pain is even more inconvenient.