My Friend had unprotected sex with her bf and she took ipill within half an hour after sex..then after 7 days she got withdrawal bleeding .... Then she took a pregnancy test after 14 days of sex it came negative....But on her period time got very very less bleeding or spotting .... I studied somewhere that light bleeding is also a sign of pregnency is it correct ? And also withdrawal bleeding says that there is no sign of pregnency ..I m confused now Which statement is correct ?...Is she might be pregnant ?