When i was 6weeks pregnant, i had brown spottingm and sadly that was the beginning og my miscarrige. However, my spotting started by itself. And my guess it, the dr just irritated your cervix a little when he examined u! I would just keep an eye on the spotting..it if gets heavier, and its fresh, go straight to the hospital. At such a early stage in your pregnancy, if it was a miscarriage, there would ne nothing at all that they can do! But you can get some kind of answers. No pain and no cramping would indicate all should be well...best of luck!