Just wondering if anyone else has this and knows why...15 mth old ds goes for naps happily, always has. Currently has either an hour in morn and pm or two hrs in pm. He wakes up screaming bloody murder and is inconsolable and writhing in your arms for at least. 5 long mins when you go to get him. He then needs about 15 mins zoned out in front of tv before you can move him without hysterics starting again. Is that normal?! Is he just going to be like this or is something causing it?