4 days ago I twisted my ankle with-in a few minutes it was HUGE and bruising the next day the bruising was a deep purple and was going up the outside of my leg. At this point it was not just my ankle swollen but my whole foot including my toes. I went to the ER after the bruising got worse and the swelling didn’t go down and they put me in a brace said it wasn’t broken and to go to an orthopedic doctor and he would tell me more. So now at the 3 day mark it is about the same with a little more bruising the swelling has gone down in part of my foot but not my ankle and now I have less pain but it is very uncomfortable. I have also lost most of my range of motion. Could I Have done more than just sprain my ankle?

From the history you provided it appears as if you have a simple ankle sprain. It is very common to lose range of motion after an ankle sprain because of swelling – especially if the sprain happened 3 days ago. You report that your ankle swelling is improving which is a good sign. It usually takes 4-6 weeks to recover from an ankle injury depending on the severity and location of the sprain. Follow up with an orthopedic doctor is important during your recovery as it is important to determine if you have severe ligament injury (such as a tear). The standard treatment for ligament injuries include dynamic splinting (which it appears you have received) as well as rest, ice, compression, and elevation.

You have not reported any X-ray images so we can assume that you haven’t gotten any. Most emergency room and orthopedic doctors follow the Ottawa rules for ankle injuries (source: http://www.bmj.com/content/339/bmj.b2901.full) :
For ankle injuries an X-ray is warranted if there is:
1) Any pain on palpation of the medial malleolus
2) Any pain on palpation of the lateral malleolus
3) Any inability to bear weight immediately after the injury or in the emergency room

These tests are very accurate any only miss about 1% of patients with ankle fractures.

If you did have an ankle X-ray, it would have caught any large fractures. However it is very likely that small hairline fractures would not be visible at the time of your visit to the ER. It will take time for the fracture margins to calcify and repeat X-ray imaging 2 weeks after the inciting incident is warranted if only minimal improvement of your symptoms is seen. Ligament injuries may not be visible on X-ray and an MRI can be performed if necessary.

Therefore, from your history it appears as if you have an ankle sprain with mild-moderate ligament injury. However, it is important to follow up with your orthopedic doctor at your scheduled time to evaluate for any additional injuries, such as a torn ligament or undiagnosed fracture, that may have been missed in the ER. If you are discovered to have torn ligaments, any surgery to correct ligament tears would not be done until the swelling decreases significantly.