I'm a 40 year old mother of two. Since the last ten years, I've been convinced there's something wrong with my heart and have been to multiple cardiologists. It started with irregular heartbeat, then went on to I think I have chest pain sometimes with and sometimes without exertion and for the last two years, I have chest pain in hot weather. It has to be slightly over 80 degrees and I would just be standing in the sun and I would get this pain within 2 minutes or so. I've had 2 nuclear stress tests in the last 3 years, both negative and just had one echo stress test which came back negative as well. Yet today is the first day of hot weather and I'm feeling the pain. Does anyone else experience the same in hot weather? Is this heart related? Really appreciate someone's input and thought?