When this happened to me, the doc had me come back in 30 days (60?) to check again. Important, he said.
It happened in late 2017. And I have a major "cobweb" floater. I thought I was screwed in terms of reading, but I've gotten used to it. I have only one functional eye, so perhaps it's worse for me. Mine are like this, but not quite so dark:
Some say they fade over time, but my doc says you just get used to them, and I agree.
I'd hoped that it would move, but it has not.
If I look like this, as if watching a fast bug run around the frame of my glasses:
the floater fades away for about fifteen seconds. I hypothesize that the centrifugal force pushes it away from the retina for a while.
I sure wish they could just go in there and move it to one side. With only one eye, I don't think I'd ever risk any surgery.