Well im not sure but when i was on birth control it never did it to me..but since we all have different bodies it can delay it, come early, or sometimes not come.
I hope so it wont come sooner, the reason is i am going vacation after 5days from now. i was expecting this period 2days ago but sadly it didn't came and i don't want to be too conscious if period will come during my vacation holiday. :(
My period always waited for vacations, prom, date nights, etc. Always. Even when I was on the pill and Mirena IUD. I hope yours doesn't interfere with your plans! Ah the joys of womanhood.