but, when I was (for many years), I would stop on
Saturday w/ hormone, placebos starting on
Sunday and my period
would usually start late
Tues/early Wed (3-4 days later). So, only a day may be too soon for you also.
But, if you don't get your AF in the next couple of days, take a test to make sure before you start a new pack. And, just a quick call to your doc to let them know you didn't have AF...may be normal when you first start bcps.