How do i make my period come sooner on yasmin?

I'm going on the trip on march 2nd and don't want to be having my period then.I have 4 active pills left,and then 7 white(inactive).BTW i'm taking yasmin.I usually get my period on 2nd or 3rd white(inactive) pill. Actually i started spotting today but i know it doesn't mean i'm getting my period,it may go away any time,it happened b4 so i'm not jumping up and down with joy.What if i skipped the last 4 active pills and tonight i start taking white(inactive)pills(i always take them at night), would it make my period to start sooner so that i'm done in time for my trip?Cause i had times where my periods were long like 7 or 8 days,it's not 3 or 4 just cause i'm on the pill like some women have,the length varies.Anyways,thanx for all responses in advance.