My left leg keeps going kinda numb, and feels cold, and has pins & needles. This has been happening for a few days. At first it was happening when I was sitting, but not in a particularly awkward position, just when sitting in a normal position with both legs side by side. Now it seems to be happening more, like even when I'm not sitting. I can feel the occasional twitch too.
Please help! What should I do? What could this be?