Please help!! My 6 month old son has been having some problems at night the last week or so. He caught a cold almost 2 weeks ago, but it's almost gone. I'm not sure if that plays any part in this?? But we run a humidifier in his room every night. But the last 2 nights have been really rough. He will sleep on and off all night long, which isn't normal because he's been sleeping through the night since he was 3 weeks old. I have tried everything I can think of and he just won't sleep! He just screams!! So I tried to let him cry it out and after 30 minutes, I gave up. (I really don't like the cry it out method personally) 

I've changed him, given him some Tylenol and oral gel since he's teething, trying giving him a bottle, bouncing, singing, swaying... I don't know what's wrong or what else to do. I'm running on little sleep and would really like some help!!