how soon is mirena effective after insertion
Rating Newest Oldest. Best Answer: Mirena is effective immediately if inserted within seven days after the start of your period. If you have Mirena inserted at any other time during your menstrual cycle, use another method of birth control if you have vaginal intercourse during the first week after insertion. Protection will begin after seven days..
If you have Mirena or Skyla inserted at any other time during your menstrual cycle, use another method of birth control like a condom, female condom, or spermicide if you have vaginal intercourse during the first week after insertion. Protection will begin after seven days. posted 04/22/2014 by VitalMilkMom.