Baby's can start teething at a couple weeks old. It's called pre teething. They can pre teeth for months before actually getting their first tooth.

yeah he's drooling alot and sounds really conjested lately

Liam started teething at 3 months, they can teethe months before a tooth starts to show. Liam drools a lot, bits on the nipple of his bottle, puts his fingers in his mouth when he's not hungry. Get little soothers/massagers you can refrigerate and freeze some of them. They love it.

I think he is but I'm not positive

We started at 3 months. Teeth broke through at 6 months.