First need to know the reason of previous miscarriage. Since there is already a history need to be more careful, so discharge might not be normal. Progesterone support and bloodiness be required. Repeated scans may be needed to monitor more closely, a more deep history of the women and her family details might be needed, so it's better to consult and give a proper history, a proper check up and all reports and even physical checkup to localise the bleeding.
Next Steps
Consult am obstetrician
Health Tips
Avoid heavy, weightlifting and bed rest