Heat and Anxiety

Okay, I've never ever made a post on here but I'm feeling desperate. I have anxiety and I'm just now starting the path to getting help, like i just had my second therapist appointment yesterday. I can't get medicine to help until I can get a heart monitor because of the possibility a heart problem is causing some of the anxiety. I get hot easily and it's making my anxiety worse. I get hot and suddenly I have a panic attack and can't do anything but cry. I'm just wanting to know if anyone has any idea how I can stay cooler. I'm drinking more and trying to dress cooler but it's not enough. I know I might sound stupid, and I know this isn't what is usually on here about anxiety but I really need help. It's hard feeling like I am suffocating every single day and not being able to do anything about it.