Hilarazon​ as the others have said i found the radiation the easiest part It started once my surgery site was healed enough. You didn’t mention which breast. Mine was left breast and 25 rounds I did the deep breath hold. The sessions are over pretty quick.
there are things that can be used to protect your skin from burning. Metapil film and StrataX ( does cost out of pocket).
I only used sorbolene cream and soap free washing. Did burn and blister towards the end but 25 rounds is a lot. And it was total sweep of the left breast and armpit.
tiredness kicked in at about rad 19 and continued for about 2-3weeks after finishing. Along with the warm tight feeling. advice is Keep moisturising.
check with the radiation nurses as to what they recommend.
If anything comes up during your treatment we can do our best to help you through.