I agree with what everyone else has said too !! I have a 22 month old who does this very same thing!! I have always just let her cry back to sleep but recently she has learnt a new trick !! She makes herself throw up !! Ugh and gross !!!
Not exactly sure how I will handle that one ! Yesterday I kept going in , without speaking and laying her back down . I must of done it 20 times before she relented and laid down !! She didn't throw up so I'm hoping it will pass !!