P.M.
You know my little guy is about the same age and his molars are coming in. It seems to really disrupt his sleep as kids notice it more at night. Anyway, I don't know if his gums are red or not, but we have had to do a little extra comforting. Also we got one of those lady bugs that is a stuffed animal, but acts as a night light and it seems to have put a positive twist on things for the moment as he is excited to get in his crib. Just some thoughts, it is always hard to know exactly what is upsetting them though!