morning after pill

Hi all,
 
does anyone know if the morning after pill is effective on us j pouchers.  I had an accident and have taken one but the phamarmist was not sure whether it would be effective as the pill is not effective and it is just a stronger form of the pill.
 
Does anyone have any experience of this or knows if it will work.
 
Many Thanks
 
claude
 
Ps I have only just become a pouchie in Jan of this year.