There's been a sudden change in DS at nursery. He's been going since he was 7 months, has always been happy and never once cried at being left. Until this week, when he's done it for the 3rd day running today. There have been no changes I'm aware of (he hasn't changed rooms yet, no big staff changes).
The only change it has coincided with is that he is also currently refusing food quite a lot, and when he first arrives at nursery in the morning the routine is that he sits down for breakfast. Tuesday he was so upset he didn't have any breakfast, yesterday thankfully they settled him down and he actually ate well all day and ended up his normal self. I've wondered whether he's getting upset because it's a mealtime, but I don't think so.
He's still teething one and off and has had some slightly disturbed nights recently.
Any experiences of this sort of thing?