My baby boy still is getting up so much at night. After over a month of 9 hours every night past two weeks he is up every 3hrs and crying. I kept hearing a sleep regression probably. But he is drooling so much and screams during the day. Won't nap well. Won't eat well. Could it be teeth? He has no fever. No swollen gums. But just wish I knew If the scream is pain or what :(