Give it two weeks. That's what I suggest. Avoid gluten for fourteen days and see how you feel. Then, on day fifteen, have some bread and see what happens. ... I've managed to stay gluten-free and eat a healthy, balanced, satisfying diet that fuels a professional tennis career -- and I probably have far less control over my schedule and where I eat than you do. You can take control over your diet, and your life.
-- Novak Djokovic in his memoir/diet book: "Serve to Win"