I thought my computer was broken because it is 2019 and I still haven’t got the Windows 10 October 2018 Update. Then I read a news story (here) and it seems that Microsoft stopped it because of problems. Apparently MS has flipped the switch and turned it back on. I’m hoping to get Windows 10 1809 sometime soon, fingers crossed!
Everything should be OK now and hopefully you have the latest update. There were problems with Windows 1809 and Microsoft stopped distributing updates, possibly more than once.
I had a similar problem and updates were very slow. I joined the beta programme to get the latest version. It fixed the update problem and moved me slightly ahead of the public release too. I am now running the Spring 2019 version with the new light theme among other things.