Aerolase neo & era on knees 4 days ago, very inflamed, swollen & red patches

Did aerolase neo and aerolase era 4 days ago, I paid almost $1400, it's not worth it cos I am more stress now. I'm thinking I am burned because it's very inflamed, swollen, with red patches and it is still very itchy. Is this normal? It's 4 days now and it didn't peel at all and I'm only having this red patches with scab.