hi i n my gf r going through a pretty bad phase. she has not had her periods, which occur to her at an interval of exactly 24 days regularly without fail since her adoloscence. we did not consummate but only had it orally. during her due dates she was not well and had 'D Cold'tablets. i dont kno if it has a role to play. however because she felt nauseatic and weak after 5-6 days after the due date she took the regesstrone medicine to induce the same (on her friend's advice). now, aftr taking it fr the first time. she's got little brownish discharge twice but not the complete thing. it is paining in her tummy (usual to when in menstruation). our concerns are- is there a chance of her pregnancy? what is the effect the medicine havin on her ? should it be stopped taking ? the chemist has asked to tk it for 5 days. how do we induce the menstruation?