I think it's far sillier to eat something that you know will make you sick. That seems like the best test-positive in the world to me. Thankfully, you have more sense than your doctor.
I know getting gluten-free is hard. Health food stores are your best source for gluten-free products, but be prepared to pay $$$.
My husband is a diabetic and has to avoid a lot of carbs. He has found that spaghetti sauce on scrambled eggs makes a fairly decent substitute for regular pasta. I admit, I've eaten it too and it really is good. As he says, pasta is just a vehicle for the sauce, so most any bland vehicle will do in a pinch.