Anxiety or something else

I am new here and joined mostly looking for support and answers. I was diagnosed with panic disorder when I was 19, I am now 38, so I have had almost 20 years with this issue. I have always had dizziness and a wobbly feeling when I have panic attacks, however the past two months my dizziness has gotten so bad that it is affecting my work. Lately I cannot stand and talk to someone or stand in line without feeling unsteady, dizzy, and as if my legs will not support me. I have had to sit down mid conversation with people. I am a school counselor so having to tell a parent mid conversation that I have to sit down because I am dizzy probably does not give them much confidence in me! I have been to my doctor and she does think I have some vertigo but mostly thinks it is my anxiety. I know that my anxiety is bad but I have never had an issue with talking to people, especially co-workers who don't make me nervous. However, now I can't stand and talk. More and more, my days are a struggle because of this dizziness I am getting and the frustration and anxiety that follows. If it is just my anxiety, I guess I have to deal with that, but I feel like there could be another explanation. I feel bad if I keep pestering my doc, but this is really beginning to be debilitating. 

Hello katie so im assuming you have been checked and made sure norhing was wrong and they said your dizziness was from anxiety witch I'm sure can happen but my question to you is have you tried going to a chiropractor because if your body is unbalanced you can feel dizzy so I think that might help you just a suggestion