Redirect broke site

Hi all- I was unaware of the problems with redirecting sites that have php. I was in my bluehost control panel and set up a sub-domain “blog.herchenrother.com” that I was going to redirect to “herchenrother.com/blog” so that I could use the first url without having to change the set up of my site’s files.
Anyways, immediately after doing this I went to herchenrother.com/blog and it’s now gone. Just a filler page by bluehost. I instantly deleted the subdomain I created but the /blog page has not reappeared.

I found many answers to fix if you redirect a wordpress page to something else but nothing about what to do if you redirected a non www. page to a wordpress page.

Project is due tomorrow morning in class, please help! I’d appreciate any advice SO much!!!