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The shot according to the info from my doc and the offical website says it is 99.9 % effective so it is not impossible to get pregnant but very hard for most people. The shot is the most effective short term (meaning it only last 3 months not years) out there. I was on it and never used a backup method and never got pregnant took me forever after I got off of it to get pg(10 months)

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16y ago

What else can I help you with?