Years ago, I had two usernames and two blogs, and from my problem, it seems like I had them associated with the same email address. I put the all my blogs under one username, my main one, and stopped using the other username (I can't remember if I deleted it / if there was a way to). Later, I merged the content from one blog into my main blog (themediumandthemayhem.net) and deleted the unecessary blog. Recently, I discovered that I can't access my main blog, that my username has changed to the username I had stopped using, and that the blog I deleted is now the only blog listed as linked with my wordpress account.
The blog I need help with is themediumandthemayhem.net.