With your period: If you get your injection when your period starts it will be effective right away. If you for some reason get it at a different time in your cycle you should use back up contraception until your period comes. It will also be effective right away if received within 6 weeks of a pregnancy.
Answered 4/4/2017
5.7k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 3 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question