my four year old son wakes up several times a night crying. hes screaming like he's in pain, but i cant find a single thing wrong with him. he is fine during the day and before he goes to sleep. he has no health issues, so i dont understand whats wrong. he has been doing this for about 6 months and always seems to wake up at the same time during the night. im thinking this is just maybe becoming a habit for him, and i would like to know how to break it. im losing a lot of sleep and so is my 10 yr daughter who sleeps in the next room. i have tried ignoring him, but he will just continue to scream untill i get in there to comfort him, and even that takes me a while to get him to settle down. i did notice a lot of times he will be scruntched up in a ball, and at first i thought he was having stomach issues, but i dont understand why only at night???