Who in the months started cutting teeth? The baby sometimes wakes up …

Who in the months started cutting teeth? The baby sometimes wakes up (before full sleep) with crying. It's interesting what it could be from, we have a little ? umbilical hernia, from that crying or getting upset can release gas a bit. Could it be gas? She also often puts her hands in her mouth, wouldn't say she sucks, but like bites, I don't know either. Chews like that. (VIDEO WATCH) Sometimes saliva flows. I think maybe teeth? What should I do? :( I tried to take a picture of the gums. I don't know how to be ? It's like she fell asleep at around 12:3