Aaron will be 4 months old on Saturday. He has been a drooling machine for about a month now (maybe more), and he is obsessed with sucking on his hands or anything else he can get in his mouth. Today he had 3 dirty diapers (usually he only has 1), and 2 of them were runny. H's grandma watched him today and she said that's a teething symptom. I've never heard that before, but I clearly don't know everything. He's also super cranky today, and that's not like him at all. Will it hurt to give him some Tylenol? We tried baby Orajel, but that only seemed to make him more upset. I'm just trying to stop him from being in pain, if that's what this is.