Is this normal with braces

I had braces as a kid, but doing Invisalign now (my bite is off and bottom teeth have been hitting the top). The first week, all my gums were inflamed but now it’s just the bottom tooth where the gum is drooping a bit, and the gum moves down when I pull on my lip. Last week it was swollen and pressing on the Invisalign tray. Also the gum in general on bottom teeth almost go in like a dimple, not sure if that’s normal or not

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