WordPress MU

I was making a website using wordpress mu and buddypress. I tried to change the website domain and path from the site admin option but as soon as I click to save changes. Since then, my website has crashed down. You can visit it at medbuddies.mededia.com

It gives the following message in firefox and google chrome.

Firefox

The page isn't redirecting properly

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

* This problem can sometimes be caused by disabling or refusing to accept
cookies

Chrome
This webpage has a redirect loop.

The webpage at http://medbuddies.mededia.com/wp-signup.php?new=medbuddies.mededia.com has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer.
Here are some suggestions:
Reload this web page later.
Learn more about this problem.
More information on this error
Below is the original error message
Error 310 (net::ERR_TOO_MANY_REDIRECTS): There were too many redirects.

I contact the hostgator people but they could not offer any solution in this regard. Kindly help! Thanks!

I tried to change the website domain and path from the site admin option but as soon as I click to save changes.

Go in to the databse and undo whatever you changed.

Thanks a lot for your reply. Can you please mention me how to make changes in database. I am sorry I have not done this before, so I would be really thankful if you can provide any link/ tutorial of how to make changes in database.
Actually I tried to change the domain of the blog from medbuddies.mededia.com to medbuddies.mededia.com/recent-blogs. And the option to update the siteurl and home page was checked.
Previously the Activity page(Buddypress) was set as default home page.
Thanks a lot for your help! I really appreciate it!