How long until birth control becomes effective?

I started taking Birth control, Aviane about 4 days ago. How long does it take to become effective? How effective is it? Someone help, please?!

Answer #1

It’s probably effective after a month, and probably about 98% effective IF used correctly.

Read the damn information that comes with it.

Answer #2

It should be effecting within 7 days. It depends on what brand most are 99%.

Answer #3

a week or immediately if started on the day of your period.

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