Almost everyone neglects the importance of proper hydration. Also, make sure you are getting enough Fiber, if not, supplement! I take fiber supplements every morning because a Protein heavy diet isn't great with the required amounts of fiber.
You know what is funny that at the beginning the protein shake gave me stomachache and diarrhea that I was a fried to have an accident, and now I am constipated. Lol. But definitely I will increase my water intake.