Sounds like you have it under control there, @arnlybub - except for the witch! What a old cow!! As if it wasn't stressful enough without her adding to it! Good that you have the pain under control - take as many of the paracetamol as you are allowed in the 24hrs (with food would be good, I think - don't want an upset tummy!)
Yes, the numb armpit is weird - mine is still numb, nearly 6 months later!
All the best with your results - fingers crossed that it hasn't gone to the Lymph nodes .... maybe use your phone to record your meeting re the results (and any other meeting) .... so you can go back over it later if you need. It is very difficult for everything to sink in otherwise. Do you have a buddy who can go with you, as an extra set of ears? My sister in law came with me to all my meetings, before surgery & after when I was in Sydney.
Take care - we'll be thinking of you next Thurs!! xx