I haven't, but know many women who have. It's just due to your cervix being more sensitive, and after vaginal ultrasounds, exams or intercourse you might spot.
yes, I had 1 when I was 7 weeks and the u/s tech told me to expect a bit of light spotting. Dont be to concerned unless it continues or gets heavier, Its just b/c your cervix was bothered of that makes sense. The right side pain could be unrelated, I have had that thought out this pregnancy.