What Should I Do If I Mistakenly Took Gestrenol Tablets Once Daily Instead Of Twice During My Treatment Cycle?

Hi. I have hormone disorder and irregular period. Under treatment I have been given Gestrenol tablet 2 times daily from Day 16-25 of my menstruation cycle three month in a row.But by mistake i have taken one tab daily.what should i do now? My doctor also gave me Tab Rosen 28 from the first day of period,on next three month.