The DepoProvera injection is 99.9% effective. The protection begins 24 hours after your first injection. Each injection is effective for 13 weeks. If you have continued to receive your injections on time, as scheduled, then the risk of pregnancy is .1%. Even though the condom broke, you were still well protected from pregnancy.
Frequently missing or being late for your injections will decrease the effectiveness.
DepoProvera does not protect you from sexually transmitted infections. Condom mishaps may lead to exposure to some infections. If there is concern about this, consider having an STD screening done.
17. February 2012
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