What Causes Abdominal Pain And Vaginal Bleeding?

me & my gf had unprotected sex. i m sure that i didnt ejaculated inside, bt for precaution, i told her to take i-pill and she took.. after 4-5 days, she had sever abdominal pain with vaginal bleeding. plzzzz tel me...is she is goin to be pregnant ????? i m very much tensed. also last time her period comes on 18th may....nd we had sex on 26th may.