This is my first month being on birth control and if it's not breakthrough bleeding, then I believe I got my period a week early. Just in case it is in fact my period, what do i do if it ends early? Do I continue taking the sugar pills to finish my first pack or do i go right to the new pack and start the active pills? And if I do that, do I wait until the Sunday after my periods over or do I start the Sunday active pill regardless of what day it is?