My dd has just started crying a few times during the night but when I go into her, she is fast asleep. Last night it started about 2am and continued until about 6am. She kept crying for a minute or two then stop and start again about 10 mins later! I put it down to dreaming but then when I thought about it, I didn't think it could be a dream for it to last so long. She would cry out like she was in pain, but was asleep. She is 17 months.