Is it possible to have a sillet heart tack?

Yes: Yes, some people can have silent heart attacks. These may be found on ekg's & stress tests, where the changes indicate damage to heart muscle but the patient does not recall any episodes of chest pain or other symptoms connected with heart disease -- like passing out, shortness or breath, swollen ankles, etc.

Yes: It is certainly possible to have a silent heart attack which may not diagnosed until sometime in the future by an ecg, stress test, or echocardiogram.