Fell down stairs, was seen. Said I have a sprain. Bottom and top of foot hurt. Shin where I have carpet burn feels warm to touch and numb. No xray.

Be patient. It sounds like you have a bad sprain and some associated numbness where you got the rug burn, and most likely had some superficial nerves damaged in the scrape. If the rug burn starts to get redder and spread, the warmth gets worse, it starts to drain pus, than it may be getting infected, so seek help again in that case. Otherwise, time will heal your wounds. Good luck to you.