As I said more than a week ago I was about to undergo an operation.
Now, 10 days after the operation I must say I am still not 100% recovered and I experience a weird sensation as if the nose is way too empty, especially the left nostril. During this period since the operation I have been experiencing head aches, and an almost continuous sensation of an empty left maxilar sinus, the side on which the cyst was before. This sensation is amplified after a nose blow or after the regular nose post-op cleanings.
I hope this is not Empty Nose Syndrome.