I fell down the stairs a week ago and when I came to a stop I could not move my lower left leg from the knee down. There were two points of impact, right below my knee which has healed fine, but the other point hit about three inches above my left ankle. After fifteen minutes I was able to stand so I know nothing is broken, bit after a week it is still bruised, a little swollen but what worries me most is when I touch the area that was hit by my ankle I cant feel anything. No pain or pressure. should I be concerned?