DS has had intermittent constipation for a few weeks now. Fine during the day, goes to the toilet regularly and normally. But then about half an hour after he's gone to bed, gets up and sits on the toilet howling and wailing saying he is constipated. Next morning - back to normal. So we assumed it was bedtime delaying/attention seeking. Should I be worried as he insists he is constipated? I will take him to the docs if I need to but I suspect they'll just say make sure he eats more fibre and fail to see that in general he is not constipated!