Misdiagnosis...should I talk to a lawyer?

A internist ordered tests heart echocardiogram and liver ultra sound, plus the usual blood and urine tests. I was told by the Dr that he would CALL ME with the results. After waitng a week I called the DR's office a "nurse" told me the Dr had sent me out a letter. She said she would read the letter to me. She read that the results of the test (echocardiogram showed I had "stiffening of the heart" (aka cardiomyopathy) A quote from a medical site~~>"While all types of cardiomyopathy can cause heart failure, each case requires specific strategies for recovery. Heart failure is treated with a vigorous blend of patient education, dietary changes, and medications" So basically the Dr was saying I was morethanthisclose to heart failure. It was a Friday that the "nurse"ead me the letter on. The Dr was NOT available to ask questions of..the woman who said she was a nurse was less than empathetic actually seeming annoyed by my asking quaestions. I reported this way of infoeming me as to this