I have a tightness that starts under left beast and into center of back along this usually a feeling of naseous after going to bathroom or having th?

Question unclear but: An older person with chest tightness and nausea usually calls her doctor (or goes to the emergency room) to be checked right away for a heart problems, UNLESS there is another convincing reason for chest tightness (decided upon by talking with her doctor). That means not waiting at home to see if it turns into a more serious condition. As the saying goes, "better safe than sorry."