what's sleep again?!

My once was a good sleeper has now decided every 15 mins is a good time wake! He used to do 5-6 hours in a row have a bottle then sleep through til morning. Now I can't get him to sleep in his bed and he's refusing to go down for hubby and only wants to sleep in my bed! I've tried teething granuals, more milk, everything but he will only sleep in bed! I think he's teething but I'm not sure I don't know what to do short of ripping my hair out!!! He's also just started pulling his hair and scratching his head if that means anything?!