My 10mo DD is normally a good, happy little girl but today just won't stop grizzling. I can distract her a bit with play but not for long. She's also not eating much. She has had a cold (or series of colds) over the last fortnight. Could it be teething? She doesn't have a tooth yet and I can't see any bumps. Should I worry and take her to A&E to have her checked out?