One Year Ago I Was In Cold Mountain Area Of

One year ago I was in cold mountain area of NM and I believe I had frost bite on toes but not severe I thought. This past December 2014 I suffered from blisters on both small toe and 4 th toe that included redness burning hot and severe pain at nite mostly. I have been under doctors care and taking high doses of antibiotics in March of this year it just healed up but still feet were blue and I'm not a diabidict.
Just this week I have the same semptoms but on Left foot. Terrible pain and the doctors do not know what this is can you help me ??