It seems that you may be having short frenum.
Frenum is a connecting skin connecting shaft to glans
of penis on venral side.
In your case, After rough sex, frenum may be ruptured and bleeding occurs.
Now, let the ruptured frenum heal.
For prevention of such problem in future, you may go for frenectomy
..i.e. removal of frenum.
You consult either dermatologist
Dr. Ilyas Patel MD