MY Ds 3years on sunday has been in a good sleeping pattern for about a year (the 2 before that was the stuff of nightmares!). Anyway last week started to play up a bit, demanding XYZ etc. My mum then babysat one night and he cried for me (which he never does with my mum - think he prefers her to me 
so she let him come downstairs on the sofa). Anyway since then he had played up something rotten everynight.
To be fair I was unwell last week (28weeks pregnant) and had to pop to hospital for assessment in the day (he went to my mum) and then was laid up on bed rest for 3 days. I know it unsettled him.
It starts with pretend crying, then escalates into genuine tears (have ignored the sillyness once to see what happened). 6 times i went up to him tonight, i'm trying to just put him back to bed and say goodnight. I would have more sympathy for him but tonight he told me he was crying because his gruffalo didn't have enough teeth!!
Other than consitent calmness what can i do?!