When did your LO's 2nd year molars start coming in? My DD is 21 months old and is having teething discomfort right now. She has all 4 of her 1st year molars (fully in) and all 4 of her canines have poked through, but they aren't fully in yet. Could the discomfort be the beginning of her 2nd year molars starting or is it because her canines need to fully come in still (even though they have already broken through the surface)? I thought she was too young for her 2nd set of molars. Any advice is appreciated!