For over a decade I've had pain on and off in my leg ( left leg only ) especially in the colder months however it's starting to get really painful during the night so painful it's waking me up, it's like I've left my leg out on ice all night and it's gone numb then painful ? I'm waiting to see the doctor as it's never kept me up at night before and they've already done the usual blood clot tests etc ! It what could it be ? Xx