I've taken the morning after pill before (about a month ago)
And I've been told that it reduces your chances to even get pregnant for quite a while after that

But how possible is it, even with these "reduced chances", that someone can get pregnant if they've had unprotected sex several times in one week? (let's say, if it was about two weeks after their period)

No idea who is lying to you, but no the morning after pill is less and less effective every day, and has little effect after 3 days.

It has no protection factors after a month.


It is possible to get pregnant because you have sex. If you have unprotected sex the changes get higher and higher,
There are chances even with protection. The morning after pill a month latter is no protection at all

The morning after pill is just that, for the morning after. IT is not to be used as birth control for subsequent encounters.

An earlier post places you around 15. So what are you doing engaging in sexual intercourse? NO ONE should be engaging in sexual intercourse unless they are emotionally, physically and financially prepared to have a child. The fact that you are using a morning after pill indicates that you had unprotected sex. Which makes it even worse. And your age indicates that you are probably under the age of consent which could result in the boy going to jail.

Bottom line, you are putting yourself at great risk for ruining your life and the life of your partner. Grow up and keep your legs closed.