Hi
I am 7 weeks post surgery I had sentinel node dye injected and hook wires inserted where the tumours were
when they inject the dye you have to have ct scans to check if the dye has reached the nodes mine took about half hr but another lady having surgery same day took over 2 hrs they give you a local anaesthetic so I didn't find it painful but was uncomfortable
i had a lumpectomy and 3 lymph nodes removed still have some numbness from the node removal
good luck with surgery you will get through it xx