Hi From the way you describe your symptoms, in my opinion I am more inclined to believe that you might be having Generalized Anxiety Disorder. But before coming to that diagnosis, I would want to evaluate your heart and vascular function. I would like to know if you are diabetic, hypertensive, smoking, under constant emotional stress. The reason I would want to know this is that these are risk factors to develop heart disease later and so they are to be treated now. An ECG may be done though it is most likely that you would have a normal one, but it is better to confirm it. Having a family history of heart disease DOES NOT make you 100% likely to get heart disease. It is possible that you may never get it too. Once I am sure that your heart is normal I would suggest you to meet a psychiatrist who routinely treats Generalized Anxiety Disorder. There are several behavioural therapies that may help you apart from drugs and the psychiatrist is the best person to help you in this. Some of the medicines that may use include fluoxetine, paroxetine citalopram, buspirone. Since these are prescription medicines, it is best you consult the psychiatrist. I hope this helps.