new posts not showing up

Just recently, it appears that my new posts aren’t showing up on my home page. I don’t recall changing any settings. But the last post showing on my front page is dated April 11, and I’ve posted at least three since then. They show up fine in my all posts list; just aren’t being displayed on the first page. What can I do to fix this?

I should add that it’s the same in both Firefox and Chrome; I’ve tried clearing the browser caches, and that doesn’t help.

My blog is at http://jdeveland.com

Thanks!