Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Based on the information given I can suggest you the most probable diagnosis. First, I would think for a deep vein thrombosis or thrombophlebitis since your pain is on the medial side of the leg and you had a bruise some time ago. Usually, you would have swelling and redness and local temperature in that trajectory of vein. A Doppler ultrasound of vein of the leg would confirm that diagnosis. Second, I would rule out diabetes since you have numbness and burning sensation in the legs. Diabetes damages the peripheral nerves of the legs so you may have such symptoms. A complete check-up, blood analyses for diabetes would rule out that diagnosis. Third, option might be a spinal discal hernia of the lower back that compresses the nerve root of that region manifesting the burning sensation and numbness in your leg. An MRI of lower back may rule out that diagnosis. With limited information provided, I could come up with this three main possible diagnosis. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Edvin Selmani