Thank you for your query.
Firstly there is a very slight possibility that you are miscarrying.
The bleeding would be more than average and heavy.
However there is a simple way to find out.
You could consult your gynecologist.
By a pelvic check up and an ultrasound
, she would be able to confirm if you are having a miscarriage
Continue having protected sex meanwhile, as during the first cycle of pill use, you need a back up method like condoms.