If you have no previous dr records, tests or appts for these issues there is a better chance of it being from an injury.
But only a drs exam , health history, time line & symptoms can really help in that part of things.

I suggest making notes and a time line of everything that happened, so it is clear for the drs and your atty if goes to that level.

I think the Disc osteophyte complex would have been there for awhile, it isn't an instant thing, like the tears, bulging or herniations might be.