It might take a while for the DNS to reset. While you're waiting, check out the Domain Manager tab from BlueHost and ensure that the domain name servers are set to the default Bluehost servers. In my case, they look like this:
ns1.bluehost.com 74.220.195.31
ns2.bluehost.com 69.89.16.4
If you're still having problems tomorrow, you might need to contact the wordpress.com and/or bluehost support to have them look at it.