Cardiology Question !!

Hi, I’m an 18F and I currently don’t have any of these symptoms as I do not really get them anymore. But, I just wanted to know if this could potentially be something serious? I’m diagnosed with anxiety and I had these symptoms at a very stressful time in my life.

symptoms: - heart beating fast whenever I think something is wrong with my health. - sometimes I get a little dizzy/lightheaded when I think something is wrong and my heart starts to pound. - at one point I had heart heaviness and went to the doctor, they did an ekg and said everything was fine. still have heart heaviness occasionally and mid-chest soreness. - still have occasionally chest heaviness if I eat a lot of food, when I think about breathing too much, and when I lean forward in bed. - sometimes the middle of my chest hurts, but it’s not frequent. it’s very rare now. (don’t really have it anymore.) - the mid chest pain was apparent when i like moved a certain way and it started to hurt all day.