Hi. Having no energy is the worst. Take some iron or b complex for a few days and see if you feel better. Think of a gluten free protein shake. Once you get used to buying gluten free, it's easier. Unless I am wrong. You can eat Wendy's baked potatoes and french fries in a crisis. Also their chili. Their sour cream has gluten in it. Taco Bell's crunchy taco with hot sauce. All the other salsas have wheat. I love Burger King and McDonalds ice cream in an emergency. Hershey bars, 7-up, Lays regular potato chips, Corn chips, cheddar cheese dipping sauce for tortillas. You will find that you get better faster by just being strict. Eat fruit, vegetables, cheese cubes, turkey and chicken.
I would say not to work out for now. If you are out of energy, your body needs a bit of time to recover and heal. Let it have the energy to do that.
If you are really really feeling bad, read up on food combining.