Open wounds after CO2 laser - normal? This is my 2nd laser treatment on white scars but it looks completely different. (photos)

The first time I had dots from the laser and readness but it was healing nicely and within a week the layer came off and skin was smooth and pink. After a month I went to see someone else for my second laser and this time the dots from Laser quickly became dark brown and within 12 hours it fell off and left me with open wounds and indentations in my skin, plus the other scars have some pus in them. Is this normal? I'm really stressing myself about it! It's been two days since my treatment.

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