some amount of spotting can be seen in early pregnancy
because of causes like,
- gestational sac
while getting embedded in uterus
wall can damage some blood vessels leading to spotting,
some women may have bleeding on expected day of periods even in pregnancy,
increased blood supply to local organs can cause spotting even on mild friction.
but as you are having symptoms like pain abdomen better to consult your doctor early to prevent the possibility of miscarriage