Can I Take Modus Tablets To Postpone Periods?

Hi.I need to postpone my periods due to my wedding. My gynac has prescribed me tab.modus 10mg for the same.periods expected on 11th november and wedding scheduled on 14th. badly need to postpone for 5 days. i got info from some forums saying that modus will prepone periods and only primolut will postpone. can i proceed with the advice of my gynac? She had advised me to start from 10th.i am 25 years old