Re: Sprained/Broken Foot
It is interesting that such a seemingly little movement such as twisting the foot over could cause so much discomfort and, perhaps, damage. I think you need to skip your primary doc and find a podiatrist who is board certified in foot and ankle surgery (not that you may need it). This means that he/she is much more proficient in the anatomy of the foot and ankle and has seen and treated almost every conceivable injury or condition. Is your foot swollen? If so, put some ice on it and get it elevated until you can get to the doc. Try and stay off of it, if possible.
Last March, I broke my 5th metatarsal (the bone along the outside of the foot that ends with the pinkie toe) in a similar situation. I stumbled while walking and my foot twisted under somewhat like you described. I felt nothing at the time of the twisting. It was when I put weight on the foot that the pain was excruciating, even for the littlest pressure. If you can bear some weight with a little discomfort, you may not have broken anything. All I can suggest is that you see a doc who specializes in feet and ankles like I mentioned above.
Let us know how it goes.