I have a question about stacking hormonal birth control. I take a generic version of Yaz which has 24 active and 4 inactive pills. I have done a little research on this but I have not found the answer to whether or not when you stack if you can just take a week of active pills from a new pack (to skip a withdrawl bleeding) and then go back to the old pack (with only the inactive pills left) to have your withdrawl bleeding and then continue on as normal with the new pack that has a several pills taken out of it. Does this interupt the 21/7 rule? What if I took only 3 active pills from the new pack and then finished the old and continued as normal with the new pack?
Thanks a bunch :)