Blog has gone down?

My blog is self hosted. It was working fine yesterday. Haven’t made any changes to it since last Monday. Yesterday afternoon, it wouldn’t come up. Hoping it was just a blip, I just left it alone and went to bed. This morning it still will not come up. Any ideas??

As a side note, I can access the dashboard just fine. If I try to post something though, it just sits and hangs on that page. If I click out of it and go to manage posts, it shows the new post there but doesn’t update in the RSS list.