pains at top of head and back of neck ,dizziness and at night extreme burning in my feet from the in

could you help me. I am 36. I have had 4 children , 3 of them was c-section ,I have also had spinal surgery on my neck area 4 years ago.I have had the feeling of my feet being on fire from the inside out out during my pregnancies. Now I am having those burning feet at night ,it is unbearable .It is the only part of me that gets hot so I have to focus a fan at my feet alone. I also get pain and pressure to the top of my head ,back of my neck, sometimes it feels like to the back of my eyes or ears I am not always sure where the pain is coming from. my blood sugar level is 72 but my cholesterol level is 273 which I am working on.