Why my face fraxel laser get worse in day 4th?

I have a question to ask you. I not sure is it normal or not. I have a fraxel laser under my eyes, some spots on my forehead and cheer. The first 3 days I feeled normal for the treatment but my 4th day my face turn red and big swollen almost my entire face. I can't sleep because I feel tight and little burn in my face. The brown spots almost gone all but why the swollen and redness still there. Anyone can help me. Thanks for your time