Post Fraxel:Restore Treatment Concern?

So Ive done 1 Fraxel Restore 4 days ago. It was meant to be on a scar on my mid right cheek. However, The Doctor did my whole right mid cheek area. She said they usually treat it around the scar as well for better result. Its been 4 days my right cheek its like still dark purple red, crusting, kinda sting itchy sometimes. If i put sunscreen on it cant be wash off cause i cannot rub my skin and it feel so rough sandpaper like along with those side effect. She said 3-4 days heal...so frustrated.