Have a history of lower back pain (L5 herniation 5 yrs. ago). Recently had cervical spine surgery, still in the recovery phase. The back pain has recently returned along with another symptom. When I sit on a hard or firm surface, my legs go to sleep. This also happens when I'm driving, which is obviously not good. My NS says he thinks the problem is in my lower back and not from the neck surgery. Was just wondering if anyone has had this problem?