If you were my patient, I would advise you that the nurse is correct, your value is normal and nothing to be alarmed about. The test could be affected by MANY different things, one of which might be what you ate the day before the test. As long as the value is within the range you are OK.
Finally, there is no need for concern that the light will damage the babies eyes. It is dark in there, and unless the light is extremely bright, it won't shine through into the uterus, and baby probably will not even notice it.
Yeah I had gestational diabetes. Ur in normal range. Mine would go up in the two and sometimes three hundreds