Numbness in foot after TT, BA and thigh lift. How long will this sensation take to go away, if at all?

I had a Tummy Tuck, breast implants and thigh lift 28 Jan. Since then I have had numbness from the back of my heal (above ankle) along to the right side of my foot. I feel it is hindering my recovery as I am not confident to walk. My surgery was done by two surgeons together and took 5 hours. I have told them both but them said they cant see any reason for it. Can you please advise how long this sensation will take to go away if at all?
