Agree,teething can make them feel a little out of sorts but at least with ours we've not had them go like this because of it,better get him to the vets poor little mite,and defo keep an eye to see if he's drinking as said above they can dehydrate very quickly especially with having the squits as well,plz let us know how he gets on and try and stay calm for him(easier said than done i know)