My 6 month old son always was a good sleeper. He maybe woke up once a night since he was 2 months olis for the last 2 weeks, his sleep has been horrible. He is put down around 8pm. Usually within 3 hours, he starts crying. Nothing calms him. i change his diaper, I give him his pacifier (which he fights & doesn't want). I've tried a cold rag to chew on...in case it's teething. I've given him Tylenol...in case of teething. I've given him gas droops...in case of gas. He's pooped so its not that he's constipated. i took him to the doctor to have him checked and he's fine. Doctor said to up his food to 2 containers of veggies, 6-8 ounces of breast milk per feeding, fruit with his cereal in the morning. I've tried all this. Last night was the worst night yet. He went doesn't 8pm. By 10:30, he was screaming. I try not to pick him up but after a while i break down. I breast feed him & he eats. Then he goes to sleep just to wake up screaming about 2 hours later. Please some one help me. I'm at my wits end. I need sleep.