Showing full content of blog post instead of excerpt

I feel ridiculous because there’s probably a quick fix for this, but on the home page of my website, my blog post only shows as an excerpt rather than the full content. While as I post I’d like for the previous posts to only be excerpts (if that’s possible), I ‘d like the most recent one to still show the full content.

http://www.kelseyprobins.com

Also, I used to have a static home page and just switched back to having blog posts on the main page, if that might have caused something.

Thank you!