Is she teething?

Sa

I have no idea if my daughter is teething or not. I can’t see any teeth. She is drooling a lot. She will chew on anything (toys, her hand, my hand, my arm. She has been very fussy, but no fever. Eating at weird intervals. Waking up several times a night to comfort nurse. Does this sound like teething? Should I be giving her something? I hate to think she is in pain. Sometimes she just cries a very sad cry. 😩