Although it is said that 1 out of every 100 people has Celiac Disease, most go undiagnosed for years. Symptoms often seen in adults with celiac disease include:

nutrient deficiencies (iron, folate, calcium, vitamins B12, A, D, E and K)
fatigue and weakness
joint and bone pain
bruising
abdominal pain
bloating
gas
indigestion
reflux
nausea
vomiting
diarrhea
constipation
migraines
lactose intolerance
swelling of hands and feet
depression
mouth sores
menstrual irregularities
infertility
recurrent miscarriages
weight loss
elevated liver enzyme

If you suspect you may have celiac disease, complete the "Do You Have Celiac Checklist" from the Celiac Disease Foundation and follow-up with a gastroenterologist that has familiarity with the disease.

Because eating a gluten-free diet can impede proper diagnosis of celiac disease, continue eating gluten-containing food. Only if you are subsequently diagnosed with celiac disease, dermatitis herpetiformis or non-celiac gluten intolerance should you begin implementing a gluten-free diet. Always work with a registered dietitian to develop a balanced gluten-free meal plan that meets your specific needs.

If you are not diagnosed with celiac disease, though symptoms continue, speak with your physician immediately.