First, you have established you are pregnant--correct?
Statistically, most miscarriages are 'just missed periods' --they happen before you know it.
Most 1st trimester losses (<12 weeks along) occur with bleeding and pain. However a certain percentage (maybe 30%) of pregnancies with 'some early bleeding' still end up delivering normal babies-only time will tell. So=get seen, get labs, ultrasound.