Wait for atleast 48 Hours.
The maximum time alloted for DNS Propagation throughtout the Internet is 48 Hours.
But, you can use a proxy and then goto your site.
Or you can even do this :
1) "Windows Key" + "R"
2) Type "cmd"
3) Type "ipconfig /flushdns" (dont forget the 2 spaces in between)
4) Navigate your browser over your domain and it should then work ok!