She's never been a great sleeper and we co-slept till she was about 18 months. She occasionally sleeps through but more usually wakes two or three times. Generally she wakes crying and recently I've noticed some cold night sweats. She's had chicken pox so I thought it might be the virus exiting... but doc today said possibly nightmares, so it got me thinking maybe it's odd she wakes crying and now I'm a bit concerned she's having bad dreams. I've asked her but she says no.