Congratulations on owning a domain! Configuring your domain name requires few more steps. If the domain name has been ordered along with some hosting package, then you just have to wait for DNS propagation as the domain must have been configured for your hosting package.
If the domain has been bought separately, then it may not have been configured for the right hosting package. This can be checked by doing a WHOIS lookup for querying the settings of your domain name. The results of WHOIS lookup will show the name of the servers that are recently configured.