The i-pill (levonorgestrel) contains hormones that can temporarily disrupt your menstrual cycle. It is very common to experience irregularities, including a delayed period, for a cycle or two after taking it, even if you had a normal period last month. To give you peace of mind, I recommend taking a home pregnancy test. If it is negative, your body likely just needs a little more time to naturally reset. If your period is delayed by more than a week or if you miss another cycle, please consult a healthcare professional for a gentle checkup.

Regular oral contraceptive pills are not effective if taken occasionally; they must be taken daily to prevent pregnancy. Emergency contraceptive pills, like levonorgestrel, are safe to use postpartum (even if breastfeeding), but they are only meant for unexpected emergencies. Using them as a regular, occasional contraceptive is much less effective and can disrupt your menstrual cycle. For safe, non-daily protection, you might consider highly effective options like an intrauterine device (IUD) or implant. I highly recommend discussing these with your doctor to find the perfect fit for your lifestyle.

Taking the i-pill (levonorgestrel) immediately after unprotected sex, combined with the withdrawal method, significantly reduces your chances of pregnancy. However, because emergency contraception contains hormones, it very commonly causes your period to be late. While your risk of pregnancy is low, the most reliable way to get peace of mind is to take a home pregnancy test. If your period is more than a week late, or if it has been three weeks since having sex, a simple urine test will give you a clear answer.

A delayed period is a very common side effect of emergency contraception. Generic emergency contraceptives, such as levonorgestrel, can temporarily disrupt your hormone levels, pushing your cycle back by a week or more. Since you have already had multiple negative home pregnancy tests, pregnancy is highly unlikely. I recommend waiting one more week. In the meantime, try to rest, as stress itself can further delay your period. If your period still hasn't arrived by next week, or if you develop severe abdominal pain, please consult a healthcare provider for a reassuring evaluation.

Since you have not taken your Deviry (medroxyprogesterone acetate) for three months, it will not protect you from pregnancy. If you have had unprotected sex, yes, you still need to take the emergency contraceptive i-pill (levonorgestrel) as soon as possible. While there is no dangerous interaction, there is no need to take your Deviry today. Prioritize taking the i-pill first to prevent pregnancy. Afterward, please consult your doctor to discuss when it is best to restart your Deviry for your irregular periods.

Emergency contraception can indeed delay your period by 12 days or more, especially with a history of hormonal irregularities. These medications temporarily disrupt your hormone cycle to prevent ovulation. Since your home pregnancy test is negative at this stage, it is highly likely you are not pregnant. For peace of mind, the best next step is to repeat a home urine test in a few days using your first morning urine. Alternatively, you can visit your doctor for a simple blood pregnancy test, which is highly accurate, and to help get your cycle back on track.