Teething without swollen gums?

momlife
Is it even possible that LO is teething without swollen gums? She has lots of signs of teething, but no swollen gums, therefore I did not even think she could be teething. Today we have been to her doctor and he says she will have teeth soon, he can say it according to her behaviour, I was very surprised. I did not know it could happen without changing of gums? I actually did not believe him, but it could explain why my LO is moody recently and prefers chilled formula and bites spoon instead of eating solids. What are your thoughts about that?