Hello friend Jeremy, Thanks for your query to Health Care Magic.. I read your query and it seems that you are suffering for gastric ulcer that causes stomach pain and also excessive gas formation and acid secretion leads to right sided chest pain .. I suggest you to do Imaging study of chest to know whether pain arising because of lung infection . But probability of pneumonia is quite less for you because there is no symptom of headache ,fever like symptoms. Do not be worried you will be returned to normal activities. Smoking is causative factor for increased heart rhythm. Avoid smoking as it aggrevates sore throat. I advice you not to skip antibiotics alternate days as it will never provides relief from sore throat and chance of antibiotic resistance to infection will be increased. Therefore Add Sucralfate gel and pantoprazole tablet to cure peptic ulcer that causing stomach pain. Hope this information is useful, Wishing you a healthy life.. Take Care.