my 3 months old baby is having very disturbing coughing problem since last 2 weeks and no improvements found (but no runny nose). She coughing with huge sound like a vomit sound with ted face. I am giving nasal drops while sometimes feel nose block. How this cough will be sort out. She also do poop once in a week then how her cough will be come out. Due to excessive coughing disturb her sleep and her feed as well. Doctors pls suggest.