The morning-after pill works by delaying or inhibiting ovulation, preventing the release of an egg from the ovary. It may also thicken cervical mucus to impede sperm movement and alter the lining of the uterus to prevent implantation.

The morning-after pill is most effective when taken as soon as possible after unprotected sex, but it can be taken up to 72 hours or even 120 hours, depending on the specific type of pill. However, the earlier it is taken, the more effective it is.

Yes, the morning-after pill is generally safe to use. It is available over the counter in many countries and has few side effects. However, like any medication, it may not be suitable for everyone, so it is advisable to consult a healthcare professional if you have any concerns.

No, the morning-after pill does not protect against STIs. It is solely intended to prevent pregnancy. If you are concerned about STIs, it is important to use barrier methods like condoms consistently and correctly.

The morning-after pill is not intended for regular use as a primary method of contraception. It is designed for emergency situations only. There are various other contraceptive methods available that are more effective for regular use.

The morning-after pill may cause side effects such as nausea, vomiting, dizziness, fatigue, breast tenderness, or changes in menstrual bleeding. These side effects are generally mild and temporary. If you experience severe or prolonged symptoms, it is advisable to consult a healthcare professional.

The effectiveness of the morning-after pill can vary depending on factors such as the timing of use, individual physiology, and whether any medications or medical conditions may interfere with its effectiveness. While it is highly effective, there is still a small chance of pregnancy even when used correctly.