Get it checked out. As a general rule: if you didn't feel like standing on it immediately after the injury, then a fracture or severe soft tissue injury is most likely. It is alway better to have it evaluated. Call your doctor for an evaluation. After injury it is usually helpful to follow the rice principle: rest, ice, compression and elevation. Quick treatment will usually improve results and healing. Dr l.
Need examination. If it is hard to stand on the foot, then it is likely that you fractured or tore ligaments enough that it should be evaluated. An x-ray and a short consultation with an orthopedist would put your mind at ease even if there is no fracture or tear.