I am a 21 year old female. I had major back surgery in 2007. I have two stainless steel rods in my back, 13 fusions and a lot of screws. I am not sure if my problem is related to my back or not. I have "weak" spells. I feel like I may faint if I do not eat and drink. This is not after a normal period of time. I eat breakfast, lunch and dinner and snack inbetween. I used to not feel like this. When I have a spell it helps if I have a bowel movement or eat. I can go shopping and have only been out for an hour or so and it will happen. I have had problems since I had surgery, but it has gotten worse the past four months. I worry constantly about it and feel like I have to have protein all the time. I also get tired easy and sometimes feel like I am in a daze. I have had my thyroid, my blood sugar, my iron and more checked. I have been tested for some allergyies and had an MRI. My doctor cant seem to figure out what is wrong with me and neither can I. Can anyone help me?