Help! This is my second dd and I remember this with my first (I was heavily pregnant and ended up sleeping on dd1's floor 
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We are currently on roughly 2 1/2 hours of screaming, she calms down when I am in the room and if I cuddle her then screams blue murder as soon as I leave. Have tried lying next to her, feeding her (she's still breastfed but rarely feeds at night) cuddling etc. Nothing seems to be working...
She's also settling at a new nursery, and is very over tired. I know, this too shall pass, but man I'm finding it hard tonight. Trying to pack for our holiday too - which will no doubt f@@k her sleep up royally anyway! 