Thanks for the query.
Usually by 6 weeks fetal pole
can be seen. Anyhow better to wait for 2 more weeks as suggested by your doctor before coming to one decision.
Some amount of spotting can be seen in early pregnancy
, due to causes like:
-The 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.
You better take progesterone
supplementation with your doctor's advice to prevent this spotting.