I'm a first time mummy, so looking to all of you who have been here before. My DS is 17 weeks and I think he may be teething. He has very rosy cheeks - the left more than the right - and he's not the happy little chap I know. I've checked his temperature and it's fine. He is sleepier today as well. Do you think it's teething? If so, how long did your little ones take between starting to teethe and actually cutting teeth? Thank you xx