Why 😩

I'm SO sensitive to heat, i went on a walk around my neighborhood today, it was 70 out which is pretty warm for this time of year but I don't think it's warm enough to cause overheating in most people, I saw others wearing sweaters and jackets, I was wearing jeans and a short sleeve, and by the time I got home I was SO hot and so sweaty😭 any temperature over 65 has me ROASTING and I don't know why, does anyone know what could cause this? Hormones?? I'm only a teenager so I know that my hormones are kind of all over the place but I'm so sick if this, I don't know if I can survive another summer this way 😭