How do you know for sure?

I need some help, please, mommas.

How do you know for SURE that your child is teething?

My son is 6 months old and I'm pretty sure he has been teething for about a month.

He chews on absolutely everything, his drooling is out of this world, he is spitting up more, and now he is starting to wake up and scream for a second at night, but doesnt wake up all the way. And on the nights he does wake up, its every hour. This isnt normal for him, he has slept through the night since 2 months.

He is also super bipolar now lol one second he is smiling and yapping to me and the next he is pissed. The only thing that seems to help is something ice cold.

I dont see or feel anything when I touch his gums.

Does this sound like I should be seeing teeth soon or could this just be normal growing pains? At what point do I give him tylenol?