Bruise-like Discoloration After Pixel Laser

I had a Pixel Laser treatment around mouth 3 weeks ago. However, I still see no difference except for what looks like a scarring in the lines, which looks like bruising or a discoloration. I'm also seeing more wrinkles.

Is this normal? The person who performed the procedure said that it is and it's part of the healing process. I don't believe it. I'm supposed to go again in 3 weeks for another session but I'm about to say no.