Like a deer

I have several crosses on me for the radiation treatment. Two on each side and one in middle of my chest, which covers a tattoo the radiation techs made that looks like a microfreckle. Sometimes I feel like a target in the woods. The cross that's on a clear sticker in the middle fell off today after being on me for about 3 weeks. Now I have an itchy rash there. I'm not sure if the rest of the stickers have to be on for the rest of my treatment, but if so, I'll have 4 more itchy spots in a few weeks. The doc is still trying to figure out if they can irradiate me safely, without getting my heart.