Hi Dave,
it only happened to me once on the ‘sunbed’ and the staff were ready with a pee bottle for me which they handed to me before I was lowered….we had a good laugh about it. The staff are use to seeing and dealing with this all the time😊
I agree with Chris about the pad..latterly I wore one.
i found that during the 30 mins wait, if I kept my mind active it stopped me thinking about my bladder. I wrote a poem about my journey or played solitaire on my phone…or just chatted to the others in the waiting room.
good luck for the rest of your treatment.
Derek