If you have taken morning after pill,then it a very effective to prevent pregnancy
if taken within 72 hours.
So the chances of pregnancy are very remote but it can still be possible.
Just wait and watch for your periods.
If you don't get them then get the pregnancy test done.
Just keep in mind that sometims these contraceptive
pills may themselves delay period by 10 to 15 days.
Over all the chances of pregnancy are almost neglible.