I have pain stemming from the back of my left leg (calf) down to the ankle and numbness like pins and needles in my toes on the left foot. ?

Nerves=numbness: First consider if there is any swelling present. When someone presents with calf pain, it is important to be aware of the risks of blood clots in this area. This would most likely present with swelling of the leg. Many times people feel numbness in their foot in such a scenario. Such pain could also be due to injury to the Triceps Surae. If swollen, I send my patients for a doppler study.