I'm very sorry you are still in so much pain. Your surgery wasn't that long ago, so you could still be healing. Remember we are not doctors here, and can only offer support and advice, not answers. If your doctor wants you to see a Neurologist, why don't you make an appointment? If he or she cannot provide answers, ask them what the next step should be. Repeat as needed until you find the answer!
If you haven't done so already, get copies of all the medical tests you've had and bring them all with you to any new doctor you see. (I've scanned most of my medical records so they are readily available if I need to see a new specialist.) Does your main doctor have all these reports? Also, write down all your symptoms, when they started, and any other information that is relevant. If you go to a new doctor, it helps to be prepared and be able to provide a complete medical history.
Good luck!