Thanks for the query.
The bleeding you had on 11th could be withdrawal bleeding due to the emergency pill.
And the bleeding presently you are having could be due to:
imbalance due to usage of pill
-Post coital bleeding
-Due to local causes like cervical erosion.
As you are having bleeding and pain, better once consult gynecologist and get examined to find out the exact cause of the problem and take treatment accordingly.
Avoid repeated usage of emergency pills.