That sounds more like your saphenous nerve. Or you could have involvement of both saphenous and posterior tib. These are both on the medial or inside side of the leg. On some people the saphenous runs to the big toe on others it runs to the ankle. That would be just to the front side of the malleolus, the knobby part, The posterior tib runs along the back side of the knobby part. You can find good nerve charts for the leg online and see if the distribution makes sense. Have you by chance seen a chiropractor? Maybe one that does Active Release Therapy? They can sometimes run down an odd source of nerve irritation or entrapment. A good one could check both spine and potential compressions in the leg from fascial bands if they do the soft tissue work. You could also consider a block of that nerve by PM.

Sending hugs