Hi madam uour chest pain is almost 9 months old.
Prologed history of chest pain has to be evaluate in detail.
Get your ultrasound for gall bladder
stones also done.
Other investigation is ECG , Echocardiography
of heart to rulre out heart problem.
Even chronic gastritis
can cause chest painnwith dry cough so , get a upper GI endoscooy done and take treatment for gastritis.
Regarding your throat infection
and ear pain, its common to have ear pain when there is throat infection. Consult doctor
Cough agsin prolonged history is not good,
? Get your complete blood test, sputum test if cough is wet, chest x ray,
Consult the doctor with report. If report shows any abnormalities thdn they will treat you accordingly.
Dont worry u will be fine. But don't neglect.