Blisters and redness... OUCH!

Two weeks of radiation are starting to show their impact. My boob hurts by only looking at it, it itches, it is red and it is developing little blisters. No under-wire bras, no tight clothing, no synthetic fabrics... No deodorant, no moisturizer, no nothing. No scrubbing in the shower, no lying on my left side. NO TOUCHING, please! OUCH!