you can check which of your post has been removed by going into My Profile and checking which of your responses have got a "This answer has been banned" banner across the top in pink.
It takes three seperate users to remove a post, so unless two other people are equally as miffed as you over a reply, it'll stay there.
if it's just your answer that's deleted, it'll still show in your profile. But if the whole thread is deleted it won't show up anywhere (except maybe in the profile of the person who asked it - not sure about that). It needs more than one person reporting to get a post removed instantly. But once you've reported it, even if it's just you, the Ed will look at it - not necessarily instantly - and will almost certainly remove it herself.
where it has the amount of questions asked and answers given and removed in your profile i have got that one answer was removed, so how do i know which one it was??
If you go into bit where it say something along the line of "questions i've given answers to" it will be there. If you're a regular user and you've only just noticed it, the chances are it'll be one of the latest answers you've given. As said previously it'll have "this answer has been banned" across the top.