No just wanted to think of potential causes before I go
Based on what you know, have seen, what do you think it could be?
Sounds like you have a case of Thrush going on in your mouth, but this is secondary to something else going on.
Taking into consideration all your symptoms, sounds like a salivary gland issue related to an infection or obstruction or POSSIBLY some type of autoimmune disorder, i.e. Sjogren's Syndrome.
That would be my guess.
Is diabetes a possibility there is a history in my family
Diabetes? In my opinion not.
Not to say you could have this plus be Diabetic as well; that's possible.
Please get this sorted ASAP.