I had unprotected sex with my gf on24 th august. Then she take unwanted 72 within 24 hour. Then she suffers belly pain, stomach pain, vomiting and etc. 26 august her cycle date but cycle not come. After 3 days she check urine test but it's negative. And finally 31 august her cycle come back. So is there any chance of pregnancy. This month period come back but next month period will come or not. If not come, is there will be any chance of pregnancy. Tell me.