It sounds like the murmur was a flow murmur, probably related to the infection and based on a normal echo is not a sign of any cardiac abnormality. Because you are still having symptoms, it is possible that the bacteria or whatever other organism that caused the infection may be resistant to the abx that you are on. You should therefore, have a urinary culture with sensitivities submitted to make sure that the right type of antibiotic is selected by your PCP.
Thank you verymuch I will go ahead get the test done and will post the information.