We've been having very similar issues for the last 6 or 8 weeks (my DS is 2.5 years). He went from being a happy little man who never cried, to getting upset at drop off and at different times throughout the day. The carers keep telling me it is because I'm pregnant, they've got 7 in the room at the moment whose mums are pregnant and they say they're all like that at the moment. I've found it comes in waves, he's had some good days and some bad days.

Mind you he has just moved up to a new room and loves the room leader in there and seems to be a lot happier there, so I'm hoping maybe we're coming out the other end of it. But going on the last few weeks we could be right back there come next week.