My 4 1/2 month old seems to be constantly unhappy. A few days ago he started groaning/moaning whilst sticking his tongue out a lot. he's been doing that for 3 days, only stopping when was asleep. Today he started off with the groaning and sticking his tongue out and now he's inconsolable. Could this been teething? I've felt his gums and I can't feel anything (alothough in some places they feel a little rough) and they don't seem swollen. He has been drooling a lot and wanting to put everything in his mouth. Any help?