Have been thirsty and dry mouth for a few days (not excessive thirst but not relieved by drinking water) have had sore throat x 1 week. diabetes sx?

Dry mouth: Can be due to aging, change in meds, change in vitamins/supplements, change in foods, change of life, onset of systemic diseases such as diabetes, neurological changes, and so many other things. See your Dentist for fun examination and for a discussion of ways to combat dry mouth. See your Physician for physical examination and appropriate lab tests.