Welcome to HCM
Your UPT was positive and I hope you took path of medical termination in consultation with a Gynaecologist,most of the times this is successful but in a few cases some product of conception may be retained inside and may cause continuous bleeding.
It is advisable to consult Gynaecologist and get a Ultrasonography
which may show retained product inside and may require surgical removal that is D&C.
Good luck to you