Hi, welcome to the ehealth forum and I am glad to help you.
You seem concerned by the cold for about 5 weeks with lingering cough, runny nose, headache and blocked ears.
As you have been diagnosed with chest viral infection and taking treatment already you can continue the same in consultation with your doctor. Further you should see an ENT doctor to rule out sinusitis and eustachian tube dysfunction as you are having headache and blocked ears as the diagnosis of the same is not possible online.
Hope this helps. Take care.
Note: This post is not to emphasise final diagnosis as the same cannot be made online and is aimed just to provide medical information and no treatment suggested above be taken without face to face consultation with health care professional.
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