Thanks for the query.
According your description, it is appearing as blighted ovum
Usually medical termination is advised up to 8 weeks.
But as now the gestational sac
is of 6 weeks, your doctor might have advised medical termination.
So you can go for it.
If the bleeding continues or products remain, you may need D&C.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429