Sorry, got to put a few bits of info here.
firstly, coeliac isn’t an allergy, it’s an autoimmune condition. If you are coeliac your body would have an autoimmune response to gluten causing long term damage (which is why it’s not simply an intolerance)
I understand your GP saying this, and they are right to- the only way the TTG IGA blood test can pick up what it needs to is by you consuming gluten.
in your position I never would have stopped eating gluten by advice of anyone other than GP, for exactly the reason you’re experiencing now.
you won’t notice your body’s extreme response to consuming gluten until after you cut it out, which is why it angers me that people other than GP’s are asking people to do so! At the point they pick it up, they should tell people to go to the GP, continue to eat gluten and rule out coeliac, as it is a serious disease.
But, in your position, you will need to keep consuming small amounts, yes.
gluten is barley, rye, oats and wheat.
also very few areas get anything on prescription now, so if you’re getting a diagnosis purely for that, I seriously wouldn’t. I get nothing on prescription.
hope this helps, sorry- I can’t help with symptoms as mine are mainly pain, fatigue and very unwell, and that’s just from cross contamination.