I am 33 year old male. I suffer from spinal stenosis, degenerative disc disease of cervical and lumbar spine. I have undergone fusion with rods and screws from c-3 to t-2, but c-5 to t-2 was unable to complete due to extreme narrowing of the canal and peticles, will be extending rods later this month. I also suffer from diabetes and a double CABG. this past week around the lower center of my back while lying down I can feel my heart beating and with each beat of my heart, I feel a sharp sensation in my lumbar spine. I have also been very tired for the last couple of months about two hours after waking up even through late afternoon. what would be common diagnosis for this in your opinion?