As far as the EKG, you need
to wait for the results. Remember, a left or right
BBB refers
to the electrical paths on your heart which is detected by the EKG, it won't be caught on an echo or anything else. A right BBB is usually of no significance, a left BBB can be a bit more problematic in the presence of heart disease. Your stress test results would have been reviewed by a cardiologist before you would have been allowed to leave.