What Causes Dryness In Nose And Throat At Nights?

For the past 3 weeks i ve been waking myself up out of a sound sleep because of my snoring. My nose has been feeling very dry. Most especially @ night. For the past 2 nights in addition to my nose feeling very dry, my throat feels the same as well. As if my mouth isnt producing enough saliva A night. Last night when falling asleep i was not snoring but felt as if my throat closed up and felt as if i was suffocating. This happened about 6x last night. Needless to say it was a very long night. Can you help me identify what could be happening to me? (im a 45 yr old female)