I had an echocardiogram, cardiologist said i've got fluid on bottom of heart & both sides of my heart don't close blood backs up , my md says its nor?

Ask more questions: I would go back to the cardiologist and ask them to explain what this all means so that you can feel more comfortable with the results. Without knowing more information it is impossible to comment further.

Unclear: It can be normal to a have very, small amount of fluid in the pericardial space around the heart. Anything beyond a small amount is abnormal and needs to be fully evaluated. Heart valves or the heart muscle not closing normally can indicate a problem with the heart.The amount of abnormal closing is essential to know if this is a real problem or an insignificant echocardiogram finding.