I'm very sorry to say your site seems to have been compromised in some way:
https://sitecheck.sucuri.net/results/www.tradeadexchange.com
(Please note that the link above is not a recommendation for their service, just one way to check on your site.)
You'll need to start by looking over the info on the page below and going through the cleanup process step by step. Take your time and be very thorough so you don't miss anything. If you do miss something, you could be right back where you are now after lots of work.
This page has lots of information for you, and links to lots more. Best of luck!
http://codex.wordpress.org/FAQ_My_site_was_hacked