Hello doctor.
Me and my 18 y/o girlfriend had sex last month and unfortunately the condom broke.
She took an emergency contraceptive pill within the next 4 hours.
She had her periods previous month, on time on 15 June.
In July we had sex 3 times, each time I wore a condom that didn't broke.
She should have had her periods on 15 July but she still didn't got her periods (24 July).
We did a pregnancy test that came negative . When will she have her periods?