I will add my voice to the chorus of encouragement to go see a doctor to have it looked at.
My son fell a few years ago, he oculd move his arm and wrist fine, there was only a tiny bit of swelling, no obvious deformity at all, but he had pain. After 24 hours I finally got fed up with him carrying his arm with the other hand and took him to the ER so we could "have an x-ray to prove to him that his arm was not broken."

yeah, well, 9 weeks later we were back having the cast removed.
My brother in law recently low sided his bike going about 3 mph, happened to hit his knee with the handlebar just perfectly and broke his leg. He had surgery last week and is off his leg (no weight WHAT-SO-EVER unless he wants to have another surgery) until Christmas. At Christmas time they will begin PT. They doubt he will be walking much before next spring.
Another friend slipped on a small patch of gravel at the WKRP rally last spring, ended up that he broke his elbow.
Unless you have x-ray vision, you simply can NOT tell what kind of injuries you may have and waiting around to see what happens can often complicate things as soft tissue swells and pain sets in.
Please, go see a doctor. Maybe it is nothing, but maybe it is not.
-v