This one is a bit bizarre, but I would welcome any tips. DD has generally been a relatively good sleeper, however in the last 2 weeks she's developed a new habit of waking up at about midnight really screaming and upset. I've no idea what's wrong, she's not hungry, doesn't seem to be ill, she has her cuddly toy and dummy. It can take between 2 mins and an hour to settle her. I'm trying to go to bed early as I need to get up early and this is really wrecking my sleep, and i'm worried about it.
I was wondering if if was night terrors, but at not quite 15mo, I think she's too young. Any ideas what it might be and what we can do to resolve it?