My scar area started getting sensitive after #6. I also noticed the whole area was quite achey when I was trying to sleep last night. I mentioned it at treatment this morning (they ask you every day how you are doing). They said its all normal - the scar area typically gets irritated first, just keep applying cream several times a day (I'm using glaxal base). The muscle type aches are because the area swells (gets inflamed) from the radiation. Advil should help.
7/20 done, this is going pretty quickly.