Maybe she is having reflux problems...People can be fine until they lay down and then there is pain. How does your daughter describe the pain and where is it? I would see a doctor about this, if it is reflux, there are meds that can be given to help her out and prevent this. Either way, she needs a thorough examination by her pedi. I hope you find answers...I wish I could offer more, but that is all I can think of...Sunny
Please post if you found anything out. I'm having the same problem with my 3 yr. old daughter for a couple weeks.
For the critics that browse around:
No, I haven't made a doctor appt. because she's always fine during the day.