Morning after Pill

It will be more successful if you use emergency contraception as soon as possible. According to studies, your chances of becoming pregnant are as low as 1% to 2% if you use emergency contraception within 72 hours of having intercourse.
Where you are in your cycle is truly what matters. Waiting a few days to use emergency contraception may be too late if you have intercourse while fertile. Because of this, clinician advise using it as soon as possible after having sex.

The morning-after pill is completely safe to take as many times as necessary; however, it is not the most effective method for long-term preventing unforeseen pregnancies. Birth control used before or during sex, such as an IUD, implant, pill, condoms, etc., is significantly more efficient, easy, and cost-effective.

The morning after pill stops fertilisation, not abortion, so (fertilisation of an egg) if you are already pregnant, taking the morning after pill won't result in an abortion.