My SO profile is telling me I have two vote down against me.
where can I find the answer that have been voted down ?
If you are referring to the large up and down votes just before the tag section of your page (clicking on your username on the top bar), then those are the votes you cast, not against your questions or answers.
(As BalusC has pointed out, the above is most likely what you are referring to.)
If you had wanted to find votes against your posts instead..
A quick way is to go to http://stackoverflow.com/reputation and search for
For recent downvotes:
Click on the envelope next to your user name at the top of the page.
You end up to a "Recent Activity" page. If you can't see the downvotes immediately, click on "yesterday", "this week", "last week", etc. until you do.