Hi Tia, I had 20 rounds of radiation on the left breast in 2023. Learn to hold your breath for 30 seconds is the key. I had no side effects and was able to continue running during the treatment. You will be ok as well. Just make sure you use prescription cream or, in my case, fresh aloe vera right after each session, probably right after in the changing room. If you use fresh aloe vera, make sure you clean it well before cutting with clean knife to avoid infection. Continue reapplying several times a day and wash it out before each treatment. Continue using it until at least 2 weeks after the treatment ends to avoid burn. You’ll be fine. Best wishes.