Am on beta blocker and my doc siad i mgiht hve a block artiries and the past two days my left jaw feels tight and my left side of my chest feels hevey?

Go to the ER: Chest heaviness and jaw pain can be symptoms of a heart attack.

Coronary disease: Given the limited amount of information you've given, the symptoms suggest coronary insufficiency (coronary artery disease). The current approach would be to have you undergo a coronary angiogram as soon as possible, to prevent a heart attack. The jaw pain is as significant as chest pain in drawing this conclusion.