Emergency contraceptive pills (like the i-pill) only work when taken after unprotected sex. They prevent pregnancy by delaying ovulation. Taking the pill before sex, even a day earlier, is not effective because its effect is short-lived and depends on your menstrual cycle. To work, the pill must be taken after the unprotected event, ideally within 72 hours.

Past use of emergency contraceptive pills like the i-pill does not cause long-term damage to your fertility or permanent menstrual issues; its hormonal effects are entirely temporary. Since you have missed periods since July, it is best to consult a gynecologist. They can run simple tests to check for common, highly manageable causes like stress, thyroid variations, or polycystic ovary syndrome (PCOS). Restoring your cycle starts with identifying these root factors. You are young, and with gentle, proper guidance, your body can easily get back on track.

It is very common for emergency contraception like the i-pill (levonorgestrel) to affect the timing of the next period. Her period may arrive a few days early, right on time, or be delayed by up to a week. This variation is completely normal as the hormone temporarily shifts her cycle. However, if her period is delayed by more than seven days past the expected date, it is a good idea to take a home pregnancy test just to be sure. Please reassure her that these fluctuations are expected and usually resolve by the next cycle.

Your risk of pregnancy is very low. Having unprotected intercourse on the final day of your period is generally outside your fertile window, and taking emergency contraception further reduces this risk. The irregular bleeding you are experiencing one week later is a very common, normal side effect of the hormone in the emergency contraceptive pill and is not a sign of a serious issue. It simply means the medication is working. To give yourself peace of mind, I recommend taking a home pregnancy test in two to three weeks.

Since both your urine and blood pregnancy tests are negative, pregnancy is highly unlikely. Emergency contraceptive pills contain a high dose of hormones that can temporarily disrupt your body's natural cycle, sometimes causing your period to be delayed for several months. Other factors like stress, anxiety, or minor hormonal shifts can also contribute to this delay. Typically, your cycle will regulate on its own. However, since it has been three months, I recommend scheduling a consultation with your doctor or gynecologist.

It is very common for emergency contraceptive pills like the i-pill (levonorgestrel) to temporarily disrupt your girlfriend's menstrual cycle. The bleeding she experienced 10 days after taking the pill was likely a withdrawal bleed or an early period caused by the hormones. This hormonal shift can easily cause her subsequent period to be delayed this month. While the risk of pregnancy is low since she had that initial bleeding, the most reassuring next step is for her to take a simple home pregnancy test.