Memory loss

Just experienced a 5-second burst of memory loss. Watching TV,  one character mentioned another main character's name, and I couldn't connect who they were talking about. It's one thing to not catch a name, but completely another to viscerally know that you SHOULD know who was being discussed, it's there but you can't reach it. I really, really hope this is not the first post in one of those stories that just makes you sad.