Visited Ft Meyers Fla 3 Years Ago And Was Not

Visited ft Meyers Fla 3 years ago and was not told of dangers of fire ants and going barefoot... I entered a sunny sandy backyard and immediatly received burning bites to soles and lower legs Now years later numbess on pads of toes especially big toes persisting unabaitedly .. I am sick of numbess and tired of feeling like i am walking on blisters . what can i do?