Hello, i have this weird sensation of having mucus or phlegm on the back of my throat, sometimes when i swallow i can taste something foul, i try to spit it out when i brush my teeth but the feeling always comes back. I don t know if it might be related but i there are times during the day where i feel like i have a stuffy nose or i can t breathe properly through one nostril, and i might wake up during the night feeling some pressure in my ears. What can be causing it? Thank you.