Dear everyone who wasn’t there when it started: a single article that you write and publish on your site is not called “blog”. It’s called a post. The word “blog” comes from “web log” and as the “log” part implies, it means the entire thing.
All the posts that you ever published are your web log. That thing you wrote and then clicked on a button labeled “Publish” is called a blog post. Or maybe a blog article, if you like that better.
But when you say “I just published a new blog!” it sounds to us oldskool bloggers as if you started an entirely new site. Which at first confuses us, and then we laugh about you a little bit (sorry).
So please: blog = all of your articles and blog post = one single article.