postpone the period time

iam going to travel , i need to change my priod time becouse i dont like i priod on that time how i can postpone   my period?

[vmvnpv]

The only way to do that is to take birth control and skip the placebo pills (the ones you take the week you have your period) or (if on the Nuvaring) don't take the ring out and for an extra week or switch the rings during the time your period is due.  But in order to do any of this you have to start birth control months in advance so your body can get used to the hormonal change in order to stop your period.  If you are going on your trip soon then there's nothing you can do to delay or stop your period.