Dealing with Physical Symptoms of Anxiety

my anxiety gets so bad that it starts to cause physical symptoms, when i’m showing too much skin for my brain to handle (it’s hot out and i’m wearing shorts and a tank top) i start to get waves of dizziness, nausea, lung pain, etc until i cover myself and am able to calm down. i don’t remember most of my childhood so i don’t know if there is a specific reason that caused this or what, but it gets really bad. i’m a bigger person so that could also be a playing factor but i’m not sure ?? anyways does anyone know what could have caused this issue or anything to help cope with it? i’m not very good with words i tend to start to ramble because i don’t know how to get my point across anyways bejdjahdbsb