If you TMT , ECHo and ECG are fine, there is nothing to worry about. Is the pain more after exertion ? If not than it is less likely to be a cardiac cause of chest pain
. I would advice you to stop worrying , continue with your medications. Generally the drugs given to you take about 1-2 weeks to have some effect and once they kick in the symptoms of pain perception would reduce.
Hope this has been helpful
Dr. Om Lakhani, MD