Question: are iuds effective right away?
Answer: Hormonal IUDs (Mirena, Kyleena, Liletta, and Skyla) only prevent pregnancy right away IF they're put in during the first 7 days of your period. If you get a hormonal IUD any other time during your cycle, you're protected after 7 days. In the meantime, use condoms or another kind of birth control to prevent pregnancy.