hi,im 25 years old and completed 1 and half years of my marriage.im going on holiday from 29th-4 th june,my periods date is 30th may.my periods r regular i want to delay my periods.somebody suggested m regestrone or femilon.i heard regestrone is a stronger medicine than femilon.Is it so? which one do you suggest me n what would be the correct time to take it?.i even heard dese medicine might result in periods problem n conceiving problems later on.Can u please help me?