Sprained ankle | Legs stopped responding

Hi, i sprained my ankle last Sunday night and have been applying ice pack on it and wearing the ankle support gear. However, 2 days back i noticed some red painful patches around the sprained ankle area. Please help me know if that is normal to happen or needs attention. Also, this happened because, while i was in washroom suddenly i couldn't feel my legs. At first I thought it's just a cramp/numbness and will be fine in a minute. However, when i tried to step ahead, as i couldn't feel my legs, i instantly fell onto the floor thereby twisting my left ankle. I tried to get up but in vain since i totally couldn't feel my lower body so wasn't able to move any part of it. After a few seconds i got the idea of pouring the busket of cold water over my feet, post which, slowly was able to move my toes and gradually rest parts of my legs! This is not the 1st time that my legs suddenly stopped responding out of nowhere.! This had happened first time in 2016, later in 2018 and now in 2022 !