BIG appointment tomorrow, I'd love some encouragement

10+ year POTS Vet here, tomorrow I'll have -what I feel to be- the most important POTS-related medical appointment of my life, I'm feeling really nervous.

I'm going to see the only doctor (cardiologist) officially specialised in our condition in my country. I'll have to travel 6+ hours to get there and, drum roll, during a massive heat wave. This is why I asked my dad to come with me, for moral but most of all physical support.

I've been feeling really sick lately, can barely function and get out of my bed, so travelling plus the psychological stress of what's about to come are hard to digest.

Any word of encouragement is highly welcome thank you!!