question: I m 52 and female, and seven weeks ago a had lumbar compression surgery the pain that I was getting in my leg is gone which is great, The problem I have now started a week ago, just when im going to sleep I am wakening up with shock sensation s in my lower back, and my back arches at the same time. im having terrible jerks and movements in different parts of my body. This only starts when im drifting of to sleep. I ve never had a problem before I always slept through the night. up until a week ago, im afraid now to go too bed at night. Your reply would be very welcome,