I had unprotected sex on the 9th of September and took the morning after pill the next day. I think it was within 24 hours. My periods were due on 18th and I got them perfect. Except they lasted 5 days. Usually they last 7 days. But it was not spotting, it was normal menstruation. And my periods are regular.
Its been 10 days now, and I still haven't got my periods.
Could I be pregnant?
Now, the confusing part for me is... If I got my periods properly after taking the morning after pill, I should not be pregnant. Then why is there such a delay this month?

PS: I don't want to be pregnant right now!

While the morning after pill is highly effective, it isn't 100% effective. It can also sometimes cause cycles to be off.

You could try a pregnancy test; following the directions carefully, or you could give it some more time and see if your period is just late or skips this month.

First if you don't want to be pregnant, don't have sex, or at least use a couple forms of birth control when you do.

Next I am surprised you periods are even close right now, they are normally off track for at least a couple of month after you take the pill