Unfortunately you’ll ovulate before you get your period. So you’ll never know tbh. My friend never got her period again because she ended up getting pregnant. But you start the bc instantly to get it started before you ovulate again. And the bc will give you your periods (mine did)
Don’t wait
My ob told me to take it the following Sunday after she prescribed it which was on a Thursday
Unfortunately you’ll ovulate before you get your period. So you’ll never know tbh. My friend never got her period again because she ended up getting pregnant. But you start the bc instantly to get it started before you ovulate again. And the bc will give you your periods (mine did)