No good will come out of lying to your doctor. I can see why you lied, but having your life is worth more than having a job. It did not come to that this time, but you may never know when being truthful may help you out.
45SFO,
The angiogram is the gold standard for chest pain caused form atherisclerosis or buid up of cholesterol in the major arteries of the heart. Generally, the physicians interpretation should't really be affected too much since it is a picture of the artery.
Some people have chest pain from spasm of the arteries or even non cardiac causes. If your angiogram didnt reveal anything, there shouldnt be any contraindication to activities so you shoul dbe honest with your physicians about your symptoms so they can investigate them thoroughly.
good luck