Hello, You have been suffering from cough and green phlegm since over two months. You also have fever and running nose, you have history of asthma. Green phlegm is an indication that you are suffering from chronic cough and bacterial infection since a long time. Long time untreated ailment cause yellow phlegm to change to green phlegm. Get clinically examined by a GP, get blood tests and imaging tests done to detect bacterial pneumonia, bacterial bronchitis, cystic fibrosis, lung abscess, etc. Stay away from stress, both physical and emotional to prevent asthma from triggering up. Take adequate quantity of water and fluids. Take rest. Stay away from addictions if any. You will be treated with a course of antibiotics (Azithromycin or Augmentin), analgesics and cough medications. Get treated before the symptoms worsen. Gargle your throat with salt water twice daily. Give voice rest and take liquid or semi solid diet so that you don t hurt your throat. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician