Hi, I have posted about this before but it is driving me crazy and worrying me to death. I have a really hollow feeling in my head where I can hear echoey sounds when I speak and amplified sounds when I eat. It feels like I have a heavy cold and my head is congested with my ears feeling somewhat full. There is no pain anywhere but when I try to unblock my ears by holding my nose shut and blowing, only one ear the air comes out of. Sometimes the other one does, but the passage of air through is very slow. I do not feel unwell but am extremely worried. If I tip my head backwards I can feel a thin drip go down the back of my throat, but tipping it slightly onto my chest gives me the hollow sound again.If I tap my head over my forehear it sounds really empty and hollow!! i do suffer with summer pollen allergy but this year I started to get this sinus thing instead. please, please can anyone else identify with these symptoms. Thank you even for reading this. X