Yes, if your girlfriend had unprotected sex again two days after taking the i-pill, she may need another dose of emergency contraception. The i-pill contains levonorgestrel, which mainly works by delaying or preventing ovulation (the release of the mature egg). It does not provide protection for unprotected intercourse that occurs after the tablet has been taken. The withdrawal method is not completely reliable because pre ejaculatory fluid may contain sperm. Therefore, there is still a risk of pregnancy after the second episode of unprotected sex. Emergency contraception is most effective when taken as soon as possible after intercourse.

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For a two-year delay, highly effective options include daily oral contraceptive pills (containing estrogen and progestin) or long-acting reversible methods like a levonorgestrel-releasing intrauterine device (IUD) or a copper IUD, which can be easily removed when you are ready. To answer your second question, emergency contraceptive pills (like levonorgestrel) should not be used as a routine birth control method. They are designed only for backups, as they are less effective than regular contraception and can cause irregular menstrual cycles due to higher hormone doses. I highly recommend discussing these options with your doctor to find the perfect fit for you.

Emergency contraception, such as levonorgestrel, is highly effective, and the light bleeding you experienced a week later is a very common side effect indicating the hormones are working. These hormones frequently disrupt your natural cycle, which easily explains your currently missed period. Since you have not had further intercourse, pregnancy is unlikely. However, to give yourself complete peace of mind, I recommend taking a simple home pregnancy test, which will be highly accurate by now.

Taking the i-pill (levonorgestrel) within 16 hours of intercourse is highly effective at preventing pregnancy. The bleeding you experienced eight days later is a very common side effect of the medication, often called withdrawal bleeding, or it could be your early period. Either way, this is a reassuring sign that the medication worked, making pregnancy highly unlikely. To give you complete peace of mind, I recommend taking a simple home pregnancy test 21 days after the intercourse.

Taking an emergency contraceptive pill, such as levonorgestrel, on day 12 of your cycle is very effective. It generally delays ovulation by about 5 to 7 days. Because your ovulation is postponed, your next period might also arrive a few days earlier or later than expected, which is completely normal. Please use a barrier method, like condoms, for the rest of your cycle as your fertile window has shifted.