Ankle pain after ACL surgury

I had my left ACL surgury done one month ago using a hamstring graph. I have very little pain in my knee and my rehab is going very well. Where I do have pain is in the inside of my ankle and up the inside of my shin. This area seems partially numb and is very sensitive to touch. Have you heard of this type of pain and what can I do to prevent it and how long will it take?