Hi thanks for your question.
You have dry cough
, sore throat
that is upper respiratory tract
infection and your receiving treatment for last 6 days with some relief.
Since you’re recovering with the treatment your receiving, you continue with treatment as prescribed to you by your treating physician.
Mangoes will not aggravate your cough.
There is no known fruit which is contra indicated in respiratory tract infection
You can eat which ever fruit you like.
Hope this answers your question.