Hi, I'm wondering why you didn't just bring it up w/your doctor? He could have done the test on the spot. Regardless, I'm thinking he might have mentioned it if you were, but I'm not sure how obvious it is to detect during a pelvic exam at that stage.
You can always take a home pregnancy test. And turning out not to be pregnant is nothing to feel stupid about!
you have no idea how many women take them at the slightest sign. It's a way to keep yourself from stressing unnecessarily.