I've had my nose done too, few years ago now and remember the feeling of struggling to breathe, eat drink etc but it's no more than a few days. You should feel well enough to work in two or three weeks I guess although I reckon BJ's might be tricky!
I do remember the black eyes, impossible to cover up well for a good three weeks. Grab yourself some damn good concealer, if you don't have any order some online, they take longer to go than you think and they are BLACK as fuck!
If you can take more time off then do, look after yourself. Arnica is good for bruising but they probably advised that. Rest up and enjoy your new nose OMG it makes so much difference to confidence I can tell you. For me, it went from hating it before, loving it after but for the most part it's that I just don't notice it now and that's exactly what I wanted, so glad I had it done.