I have been on yasmine for over 4 years...
I love it. I can tell you this for a fact that I start my pills on a tuesday, and once I take my last pill on the last tuesday of the month...My period always comes 3 days after...
So I made you a cute lil chart:
last b/c pill: period day:
sunday wednesday
monday thrs
tuesday friday
wednesday saturday
thursday sunday
friday monday
saturday tuesday
this is how yasmine has always worked for me. This might be the same with your body, might not. Maybe it takes your body only 2 days not 3 like my body.
Hope this helps