Hello and welcome to healthcare forum.
Alonge with your chest complain, if you have sputum expectoration then you should go for sputum culture
and sensitivity testing to know the exact organism by which you are having chest infection
and it will also guide for proper antibiotic treatment.
If the test shows that no organisms found then it is possible that you might be having some allergic problem of chest and for that you require to consult a chest physician.
Best wishes for your health.