Burning/heat sensation through right leg, accompanied by numbness (numbness doesn't occur that often when i experience the heat passing). no pain or tingling. the sensation starts from the lower calf from the back till the lower leg, above my ankle?

A nerve strain can cause the burning/ numbness sensations you have described. Exercise or stretches can make this worse. Allow yourself and those areas to rest for at least 5 days. Apply alternating Hot/ cold packs each for 10 minutes separated by at least 30 minutes. Take Ibuprofen to relieve inflammation, and see your personal Dr for a full in person exam.