My 8 month, while not the easiest baby in some ways (crap sleeper, we're struggling with weaning him) has always been a very happy, smiley little soul. For the past week he's been incredibly miserable - constantly grizzling but also a lot of full on very distressed crying, which is very unlike him. He's even started doing this new (terrifying) cry where he seems to stop breathing for a second first. Weirdly, this seems to have coincided with him learning to crawl, which I thought would make him very happy because he was desperate to do it! I don't think it's teeth - he's just got two new ones in a couple of weeks ago and I can't feel any more coming, and Calpol doesn't help which it really did when he was teething. My friend reckons it's just one of those developmental stages they go through where they get grumpy and clingy and that we've been lucky to never have a bad one before - does this seem right? I'm worried he's ill but there are no signs - normal temperature, normal nappies, not off his milk.