you probably has acute respiratory infection with allergic bronchitis
, which is causing chest tightness
you should see your physician for the investigations and treatment..
you need to stop smoking
and exposure to cold air, that will exaggerate the condition..
you need to put on antibiotics, bronchodilators and nasal decongesants and antipyretics..
you had vomitting, probably that is drug induced gastritis
, so take some antacids before consuming tablets, and eat well balanced diet with fruits in it..
all the best.