Sounds like a good idea - just get in to to see a Dr.
Don't stress on the whole WC thing too much.
It can get pretty complicated at times. From my very limited exposure to these things - specifically in the District of my State - the employer will ALWAYS automatically reject any Workers Comps suit based on "causation." They also always lose once it goes before the local WC judges, because in my State the injury is presumed to have been caused by work unless proven otherwise.
HR won't have anything to do with it once the insurance companies and lawyers get their hands on it.
Don't get too wound up about that stuff - your health is #1.
I'm happy to hear that you'll be seeing a Dr.
I hope you find some relief soon.