chloendean on "Changed my site url to my domain name, every page except my homepage disappears."

I originally hosted my website http://invigoratemassageandwellness.com on wordpress.com, and have switched over to bluehost this week.
I've updated all my nameservers to point to bluehost, and changed my site url from http://69.89.31.102/~invigor5 to http://invigoratemassageandwellness.com.
But while you can get to my main page by going to invigoratemassageandwellness.com, you can't get to, for instance, invigoratemassageandwellness.com/groupon (or any other page on my website for that matter). They just show up as an internal server error
The pages are there, and if I change my site url back to my server address, they're accessible again. But then their urls are back to "69.89.31.102/~invig5/......"
I'm assuming this probably has something to do with me, my settings, and my wordpress urls and site urls. What do I need to do differently?