 [ Symptoms ] i have also got grade 3 asthma i went for a chest x ray they said that was fine but i still have a wheezing cough and pains [ Disease ] hi thank you for your question to question doctors com if i were you i would go back to the doctor for follow up ad the specialist will help you figure out the degree of narrowing in your airway by doing a simple test it needs further treatment with medications and cough training as well as breathing exercises are good