Gud evng Dr, My periods delay by 7days.After I taken pragency test.The test was negative.  so I asked Dr he refer me to take tablet for Delay periods so I using deviry 10mg tablet. Dr refer this tablet I using the tablet for 4days in morning and night after food.But Dr refer me to take 5days but I completed 4days but still now any result and periods are not came when will result accours any kind of information about this problem and any instructions wants to do.