My daughter's been coughing since October and at first, it was just like any normal cough. After three days of this, we took her to see her pediatrician who prescribed some meds and antibiotics. She's basically been on one medication or another since then. We've even seen a few doctors, like a general physician, another pediatrician, and a pulmonologist, but nothing's working. She coughs so much at night that sometimes she ends up vomiting. We're really worried and feel helpless about her health. She's on an inhaler and other meds for her cough and cold right now. Can someone offer any advice for us concerned parents?