Can not drinking enough water and being stressed all the time my your tounge sry?

Dry mouth: Usually there is another underlying problem. Mouthbreathing because of insuffient airway concerns can force tongue forward disallowing the seal and resulting dry mouth.

Dry tongue: Among causes of dry tongue are dehydration, mouth breathing, clogged nasal airway, certain medications/supplements/foods. See your Dentist to evaluate your oral cavity tissues and meds. See your Physician to evaluate your tonsils/adenoids, meds, and general systemic health