Ouch, what bum luck. Pain while laying down is usually related to posture. Sleep posture is greatly influenced by the surface you are laying on like your bed. Personally, my back pain at night has reduced substantially since using the new Tempurpedic Cloud Supreme... it is like sleeping on cloud 10.
Other times, especially when it comes to leg pain or Sciatic pain, the nerves might be more irritable on account that the blood pressure (perfusion pressure) is slightly lower while sleeping. Not much you can do about that except make sure that you do not smoke and get as much exercise as possible to improve circulation.
If your pain is also worse while walking, that probably means that your most comfortable position to lay in is the fetal position with your knees drawn towards your chest.
I hope this information can help you find some comfort.
Dr. Christina Lasich, MD
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