I will start with the problem of celiac disease which as I understand from your description is a self diagnosis. My advice would be to get this diagnosis confirmed with a biopsy and consulted with a gastroenterologist, because a diagnosis of celiac disease requires a life long nutritional modification which means being completely gluten free. Patients who consume diets that are gluten free require good nutritional advice from a physician/nutritionist in order to prevent nutritional deficiencies. One of the reasons for exhaustion/fatigue etc is a nutritional deficiency which may be subtle to begin with. Anemia ( low hemoglobin in the blood)may occur due to nutritional causes or it may be associated with the Sjogrens that you have stated . Anemia is one of the causes of feeling fatigued. Therefore I suggest that you should first consult a gastroenterologist regarding your diagnosis of celiac disease .You should also have a complete blood count done which is a blood test . Please check your hemoglobin values first. You may also review your medication and symptoms with your health care provider about the Sjogrens. Nutritional advice from a nutritionist is essential if you are advised to be gluten free.