Hello, I constantly feel that my head is clogged. It pains in the temples, behind the eyes and around/below the ear. Ears give a sensation/sound of opening and shutting. Seems like they're blocked too. Also get sore throat often. One of my nostrils always seemed blocked. Probably chronic sinusitis, what do I to resolve this? Or is this anything else? This has been happening for over a year or two.