I Took A Spill From My Horse Today That Resulted

I took a spill from my horse today that resulted in a very tight and swollen left thigh. I'm not sure what happened to it during the fall, but it most likely got mooshed against the fence when I fell or perhaps just jerked from the stirrup.
I did fall under the horse sank a hoof into my right side. That all seems normal - minor pain, swollen and bruised, no big. The left thigh has no bruising at all but is very tight and has 2" of additional circumference due to swelling, mild to moderate pain and pulling sensation - I am convinced that my bones are not broken or fractured, so my question is what are the chances that I may have internal bleeding in that leg vs just a pulled muscle? Do you feel I should go to urgent care tonight or can I wait it out and see how everything is in the morning?
Thanks!