Vaginal contraceptive film is a paper-thin film that has a spermicide in it. A woman can place it in her vagina on or near the cervix (the entrance to the uterus), where the film dissolves in seconds. The spermicide in it works for about an hour.
You should wait at least 15 minutes after inserting the film before having sex. And you must use a new film each time you have intercourse.
Plan B One-Step is a type of emergency contraception. This is birth control that can prevent pregnancy after unprotected sex. People sometimes call it the "morning after pill." But you don't have to wait until the morning after sex to take it. In fact, Plan B is more effective the sooner you take it. It is a one-dose regimen: you take one pill. The pill contains 1.5 milligrams of levonorgestrel, which is used in lower doses in many birth control pills.