I am Prudhvi Raj sir 27 years years old since 2 weeks I have problem on breathing 1st day night in mid night suddenly I am unable to breath on bed after that no problem on breathing. Since 4 days I  am unable to breath taking breath from mouth when on bed. My nose is perfectly working but breath not sufficient want to take it from mouth in sleeping position in sitting position no problem wt is my problem sir wt is the medicine I have to take it please tell me sir