Odd that he went straight to std... not to ENT type issues or even for a CT to lol for sinus issues which would be more likely to cause dizziness. What tests were run And did you get a copy? Any hormones or electrolytes?
I would take someone with you next appointment just to vouch for symptoms. Sounds like your doctor is a "dr house" and does not trust patients. Anxiety is something but that should not be the first thing unless you went to the doc with 20+ google searches printed out and most of your hair pulled out... and then he should treat you, not talk about it.
So if your doctor is not responding, find another.
I did general blood test and all like STD tests just to make sure like everything came back negative my doctor said it might be deppression or maybe anxiety so im not really sure what it might be
What did your doctor say? Did they run any other tests?