Similar here: had chest pain, heart palpitations, racing pulse, shortness of breath, dizziness etc. for more than a year. The pain and dizziness was real and worrying. Was convinced I was going through heart failure in my 20s. Took a while to get an appointment with a cardiologist, but I got it and he did a few tests, said "it's just stress" and from that moment on the symptoms essentially disappeared. Boy was my face red (from face disease, I believe).