Welcome to the forum, @LouiseR. Terrific that you are going so well following your procedure. Just make sure you don't do any heavy lifting (hanging out washing, picking up kids or pets ....or even reaching high or low into cupboards) for a little while longer, just to be sure, to be sure. ;)
Re your 'side/front sleeping' ... were you given a small cushion to put under your affected arm, specially at night? I found mine really helped as I am a side sleeper too and not that fussed on sleeping on my back.
All the best for your results appt .... consider recording all your meetings on your phone, as it is easy to 'miss bits' at the time .... write down any questions you may have, as it is easy to forget to ask them, too!
Terrific that your experience so far with all the medical staff etc has been a good one. xx
take care & all the best