Dear Patient, Thank you very much for your question. If you have done ECG, chest x-ray and blood work it is hard to believe your chest pain related to heart or lung problems. However, I recommend you to do an Echocardiography to rule out the presence of MVP because mitral valve prolapse which is very common among females sometimes gives symptoms like dizziness, palpitations or increased heart rate and chest pain. Also anxiety and stress as your doctor said can trigger these symptoms. Therefore, my advice is to consult your family doctor and treat your anxiety and do an Echo test to rule out MVP. Apart from medications, you can relieve your anxiety by doing yoga, breathing exercises and meditation. I hope that I answered your question. Good luck! Dr. Dinesh Nuwan Weerasinghe. MD