For what it's worth, a bad sprain can be so much worse than a break. From the sound of it, you likely either severely stretched or possibly tore some tendons/ligaments/muscles in your ankle when you rolled it. I did the same thing about 10 years ago when I came off a horse. I am a lot like you, unless bones are sticking out or there's arterial blood spray, then just tape an aspirin to it and keep going LOL. So, when I sprained mine, I just kept on going and endured the pain. I kept it wrapped in an ACE bandage at first and eventually started using one of those lace-up ankle support braces
like a lot of basketball players wear.
Unfortunately, after you roll it that severely once, then in the future it is much easier to do it again because the entire joint is loose. I still have some trouble with mine.