Hi sir, I am sure this has to do with the pill she took. the question we need to ask is , is her periods usually regular? and does she often take the pillor was it her first time? however, since these pills are hormones, it may have upset her cycle a litle, reaso for the repeated menses. the chances that she is pregnant are very slim, but if she continues to feelpain and bleed regularly, she should see a gynaecologist. it will be better to havee protected sex till her period returns normlly. I wish you all the best