Welcome to health care magic forum,
It looks as if you are at the developing stage of sinusitis
, or you may have a nasal polyp,because you cannot through your nose, and needs investigations to get confirmed, , as you said that you have tried lot of medicines, i don't know, you have tried homeopathy
or not, but homeopathy is the best way to get complete cure for your problem, as other treatment only suppress your conditions which may give you relief but not permanent, so if you are looking for a permanent cure go for Homeopathy,
start taking hot water steam daily twice a day, especially before sleeping.
avoid sour things and extra salt.
drink lot of water, if possible drink some Luke warm water also.
medicines increase your immune system
For more info you can mail us at email@example.com or visit us at www.drkackerhomeopathy.com