My 9.5mth old has gone from being a very happy chilled out bub to a very grumpy one the past week. We barely knew his first 3 teeth had come through a few weeks ago but he has 3 more ready to break through so I'm thinking his mood is related to teething but... Within an hour of waking up in the morning the grumpiness starts, he's unbearably irritable I am tearing my hair out, no matter what I do he's not happy, he doesn't want cuddles, he clings onto my leg so i pick him up then he keeps whingeing and wants to get down again. He isn't interested in his jolly jumper, he's crawling and walking around furniture so I've ruled out him being frustrated. I'm fairly sure he isn't sick or coming down with anything. He'd been playing when put in bed for his day sleeps (yesterday he didn't have his afternoon sleep, he just wouldn't go to sleep) but sleeping ok at night. So is it teething related or a phase for this age?