My leg has a numb tingling burning sensation in my upper thigh on my left leg for a couple months and i dont know what it is.

Uncertain: For accurate diagnosis a history and visualization (at minimum) would be required.

Many things: This could be a number of different things, depending on the history of the issue. It would be best for your to visit your local health care provider to be assessed with a diagnostic and treatment plan based on your history and physical exam.