me and my gf had a sex at her periods date but she didn't had periods at that date and after some time she had white discharge.its been 12 days since her last period.Her period date was 1.1.14 but now its 11-1-14 and she didn't get periods.she used gyneric pills but didn't have periods and today we take urine pregnancy test which was negative please need your kind help and can we use ST Mom 200mg for getting her periods ?