The sickness that probably I will be facing with !

A pre-longed nose block usually happens when there's something like a tumour blocking the inner nostrils or when the inner nostril membranes swell up.

Check with an ENT Specialist. Ask him to check the inner nose, which he should do with a endoscope like instrument (a thin cord with a light and camera to see what's happening inside). This should be done to find out if there's any Cancerious tumour blocking the nose. Do not worry as it's not a very big deal and curable.

The nose block could be for several reasons, but i'm answering the pre-longed nose block conditions.

In case of swelling up of the inner nostrils, the Doctor should give you some pills to reduce the swelling and probably some for associated headache. He should also give you a long term Nasal drop/Spray/Puff for relief.

It is very important to remember that this condition is curable without a surgery, if not by pills, then homeopathically. DO NOT LOOSE HOPE, AND DO NOT BE SAD. But do consult a specialist Doctor. Peace!