Gluten free...the way to be?

This past year has been really trying, especially with my health. I've been from doctor to doctor. And earlier this month I spent a good 6 hours in the er. But to no avail, every test has come back as inconclusive or normal. So I've had two doctors suggest I try doing a gluten free diet for a couple of months and see if it helps at all. I started it this week. And I tell you it's the hardest thing I've had to do. I always eat wheat products. When I am hungry I turn to breads (especially toast) and pastas to fill me up. It was so hard yesterday when I went shopping to find food I can eat. I nearly cried. The gluten free products are so expensive; over $5 for a tiny box of pancake mix, nearly $6 for 4 muffins, $5 for a tiny loaf of bread. I have no idea how we are going to afford this. I have to admit, I am rather discouraged and it's not even been a week. I am hoping the CT scan I'm going in for next week will finally shed some light as to what is going on with me.