Hi welcome to HCM... Here you are having burning sensation in chest ... So gastritis or acidity could be there ...that can lead burning chest pain... For that omeprazole taken on empty stomach with lots of fluid and excess spicy food avoided .... As you have history of cold before around month allergic inflammation of bronchi that is bronchitis has to be ruled out .. Digital chest x ray will be useful ... Also investigate with CBC , if eosinophilia high than medication can be given for allergy .. Your auscultation also necessary along with physical examination.. Take care Advise : Consult pulmonologist for examination...