Sorry for the delay in responding to you - I was away on vacation this past month. I hope by now you have gone to see your doctor. The typical length of a cold is 7 - 10 days, so symptoms that persist longer than that should definitely be checked out by a doctor.
You posted your question in the CFS forum, but cough is not a typical CFS symptom. Your doctor can help to figure out what's going on - perhaps you developed bronchitis after your cold.
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