I see my regular obgyn and a high risk doctor. One of which is once a week then the other is usually every 3 ish weeks maybe

Anyways I told my regular doctor that I've been getting really bad panic attacks that have gotten worse. He listened to my heart then told me he was going to add an additional test to my labs that I had to get done from what I could understand from googling it the added test was for something about my thyroids which I'm not really knowledgeable about and he is now referring me to a cardiovascular specialist which made me have a panic attack .

Anyways does anyone have something similar or know about thyroid problems or how that correlates to having to see a cardiovascular specialist. I'll also Google it.