Thanks for posting your query.
Did you do a pregnancy
test before taking the medicine? Was the pregnancy confirmed? When did she have her periods last?
It is dangerous to use these medicines without medical supervision.
The amount of bleeding and pain usually depends on the period of gestation.
From your history it appears to be about 4 weeks gestation.
Severe abdominal pain
is an indication for seeking immediate medical attention.
Please get your girlfriend to a hospital at the earliest for medical help