Hi Thank you for asking HCM. I have gone through your query. Pneumonia is characterized by high temperature dyspnoea cough and chest pain. Your problem can be most likely due to upper respiratory infection. As it is greenish mucus bacterial infection will be present. So better approach your GP for antibiotic therapy. I usually give antibiotic Co-amoxiclav for such case. Take warm fluids like tea with lemon and chicken soup with pepper. Taking chewable vitamin C also will be helpful for early recovery. Hope this may help you. Let me know if anything not clear. Thanks.