What Chillness In The Ankle During Night?

Hi , My name is Jenyi, Am 46 yrs of age. I had a 22 1/2 lb tumor in my uterus that led to a hysterectomy 6 yrs ago. 5 days later led to blood clot to the venus vein in my head. It threw in to a coma for five days. prognosis was grim. "Take her to a long term facilty an leave here there" was the answer mom got!. Obviously this did not happen. Ended up in a very good rehab Hospital "Edwin Shaw" of Ohio. It left me with a drop foot hence the ankle break. The Doctor put a piece of metal an three srews to stabalise it. My ankle has been getting cold @ night. I have to look Am I doomed to cold ankle? What do look forward to I have to. I can't get to the Doctor till the 21st of this Month, because he is out of town till then!