Glad you are seeing a GP soon.

I remember doing a scoring questionnaire. According to my answers on that sheet I didn't have major issues but the truth was I was in trouble. A good psychiatrist will be able to diagnose you from interacting with you and not just relying on a questionnaire.

A good psychiatrist/Therapist will be able to connect with you and open up a dialogue. They will be able to understand you on a much deeper level than most. Ultimatly they should be able to give you insight into your condition.

Our mind and body is so interconnected that one can readily affect the other and vice versa. Could be somatic, could be something else but it if it is causing you pain then it deserves attention.

Please ask your gp for a referrral to a different psychiatrist/therapist for ongoing help. A gp may well be able to prescribe you medications but are they able to spend the time that you need with you.