Sprained ankle, help 10 points?

Last week I sprained my ankle and the hospital considered it a moderate sprain, the doctor I saw didn't seem to interested as he said 2 words to me and sent me on my way. It's been a week now and it's still pretty swollen, I can't put much weight on it and I've done the "rice" therapy all week, also when I touch the side of my foot and toes it's completely numb, it feels exactly like how your foot would right before you wake it up from falling asleep, it's also tingling. The doctor gave me nothing for my foot, no medicine, no crutches. Should I give it more time or should I go back to the hospital? All they did was X-ray it. If I ask for a cast or a boot, will that help me or no?