I tried to update

I tried to update my site 2 hours ago. If i remember, 16 updates. Started update, got the spinning disc, left it for 30minuts, tried to log back in both as admin and as public. get this message This page isn’t working – http://www.tomdoughty.com is currently unable to handle this request.

HTTP ERROR 500 Can’t use your web site linking system because can’t get into my site.