Thanks for your query.
It appears as if you have had a subchorionic bleed..
The chorion and amnion are the membranes which surround the baby and further develop into the placenta and provide support for the growing pregnancy
If there is bleeding in these tissues there is a danger of miscarriage
You should take appropriate medicines for supporting the baby as advised by your obstetrician.
Take rest, avoid dehydration
Avoid intercourse and stress
Only a review scan will show if the bleeding has stopped or progressed.
ALl the best.