basically me and my girlfriend were fooling around and i ejaculated on her and some went on me, no sperm was near her vaginal area, she used a make up wipe to clear the sperm of her and my self, she then used that same make up wipe to clear up around her vaginal area, and the wipe may of even touched the lips, about 31 hours later she took the emergency contraceptive pill, what are the chances of her getting pregnant?