Hello dear, Thank you for your contact to health care magic. I read and understand your concern. I am Dr Arun Tank answering your concern. You are having the infection of the chest possibly of pneumonia. For confitmation you should do xray chest PA view along with culture and sensitivity from the sputum coming out. This will guide us possible consolidation site and also the probable organisms and its sensitivity pattern. Taking antibiotics can cure the infection at earliest. Diarrhea you are having seems to arise from the side effects of the drugs of the arthritis. Please do good respiratory exercise like deep breathing and other. This will help you clear your chest rapidly because it will improve the circulation in the chest. The steps of exercise can be taught to you by the physiotherapist in the right way. Please eat natural foods like foods, green vegetables etc. They boost your imunity and you can fight with infection better. I will be happy to answer your further concern on bit.ly/DrArun. Thank you, Dr Arun Tank Infectious diseases specialist, HCM.