My son is 6 1/2 months old. He has had a very bad cough for 3 1/2 weeks now to the point where he turns red and curls over in pain and it has not gotten any better. It started off just at night, he would wake up gasping for air and coughing for about 1 minute. For a week now it has been an all day and all night thing. He has seen 3 doctors and the nurse practitioner at his clinic and they all recommend the same treatment- neubilizer when needed, warm liquids, vaporizor at night (no vicks), and 2ml of Zyrtec or benedryl at night. Well I have been doing all that. Today he vomited a lot of phlem with formula after coughing. I can hear the phlem in him when he breathes but I also hear a crackling sound when I place my ear over his lungs. I have contemplated taking him to the hospital for a couple of days now but I haven t because I have already been told 4 times that it is just a cough. He was last checked last Thursday (May 24) and he did not have flu, strep, ear infection, and his lungs sounded perfect. Should I take him to the hospital where they can run a more extensive test on him?