Our lg who is 20 months has been tearful, having meltdowns over nothing and very clingy over the past 3/4 days. Also waking 4/5 times a night crying, which she has slept 12 through the night since 6 weeks old. She has been dribbling and biting her fingers and has two back, top teeth which she didn't have a few days ago. But would the crying and over the top tears be related at this age? I know it sounds silly but she already has 8 teeth and they all just appeared with no signs, dribble or change in behaviour. I don't think she was even aware where these teeth come from. So this is new to us.