Hello everyone! Girls, please take a look, my child has something like…

Hello everyone! Girls, please take a look, my child has something like a little band between the cheek and the gum, it's like a small knot. It's quite noticeable on the left side and there is none on the right. I noticed this only today. Gave him Gerber puree and before that only porridge and cooked zucchini and gave it in puree form.