<s>[INST] Hi there. So i am 19 years old and in college. I got sick 3 weeks ago, i feel better now but my cough is still here. I had phlem well i was sick...which has decreased but now i have noticed a weird breathing feeling, like a grumbling in my chest/lungs...What is up!? [/INST] Hello ! You seem to have developed post infective bronchial hyperactivity, which means to say, in some patients, the respiratory tract infection causes the airways to construct temporarily for few days. This causes difficulty for air to enter and exit through the airways causing the grumbling sound. The good news is this is a temporary phenomenon. Get a chest x-ray done. Ensure that you complete the course of your antibiotics. And also take Inhaled bronchodilators like Forecourt, Bedmate or Dublin inhalers for few weeks until your airways get back to their normalcy and your breathing is at ease. Avoid exposure to cold and dust m Hope my reply is of help. Do Chat Doctor.  </s>