DD is 6 months old. She's a good sleeper and will generally go down at 7 and wake around 6:30am/7am, which is great.
We've recently made the transition from moses basket to cot in her own room, although prior to this she was going down at the same time into her moses basket no problems, so no change in routine.
Now, it seems that about 25/30 minutes after she goes to sleep she wakes crying. Not grizzling for her dummy but full on out of nowhere crying. The first time it happened I thought she had been bitten by something her cry was so sudden, but it's continued as is generally at the same time. Sometimes she will resettle with a bit of reassurance and her dummy, but sometimes it takes more and the last couple of nights we have had to use a white noise app to settle her again.
Has anyone had any experience of this and what it could be?