Hi @chrisberry1983 and welcome to the forum,
If you haven’t already looked here, you could try going to your dashboard on the web version and clicking on “Teaching” in the white drop down menu button (top right below your avatar). Some of the courses I experimented with still appear there in my account.
I’m guessing that you didn’t make your course ‘public’ but, if you did, you may be able to find it by scrolling to the bottom of the relevant main course selection index.
Failing that, I don’t know of any way - unless you made a note of the course url - or can find it in your web browsing history.