If A Girl Is Virgin And Youre Just Rubbing Her

If a girl is virgin and youre just rubbing her with your part and dont even ejaculate on her and her periods get one week late. This time her periods are bit heavier than before but she gets her period for 7 days which is normal for her and after 2 days when her periods end she masturbates twice and wakes up to bleeding which only lasted for that moment. Could she be pregnant?
P.S
No others signs of pregnancy found in her its been 1 month when she foreplayed.