hello sorry for my English I'm not fluent.

so here i am it's been 5 years since I've been suffering from GAD, the one where you can't eat with your loved ones because your body is too anxious, the one where you can't talk to anyone bc of this

i've been doing therapy since and my psychologists told me they can't do anything about my anxiety.

the point is that there is no deep reason for my anxiety i am a lover of life etc, yes i can be stressed about things but even with the exposure thing (ex : bar gives me anxiety so first i go there, next time i enter the bar, next time i sit etc etc etc) it never gets better.

so I'm wondering: can anxiety be related to a health problem? Like idk hormonal issues (i'm a girl), some deficiencies, or other body issues ?

if yes what should i do ? i'm thinking about having a blood test done, what should i ask my doctor? 

thanks for your time i hope someone will be able to answer those.