How does it take for the birth control shot to become effective?!
Question:
How does it take for the birth control shot to become effective?
Answers:
That first answer is pretty nice & lengthy! :-p The info is all correct though.
PERSONALLY, I am on Depo Provera. When I got my first shot, I was informed that Depo-Provera can require up to fourteen days to take effect. This means pregnancy can occur within fourteen days of the first Depo injection.
I'll add a Wikipedia entry for you if you'd like more info!