4 months now i get a horrible weakness like fatigue after breakfast. no shakiness, just full body weakness. i eat yogurt, eggs & a carb. i think its the carb that causes it, but i always eat less than serving size& this only started recently. help?

If you only have this symptom after breakfast the answer will be hard. People may have postprandial weakness or fatigue, but not only after breakfast. I suggest you make a food diary when you have that symptom for at least several weeks to a month then bring that list to your doctor along with your blood sugar level (you can buy an accuchek machine at CVS or Walgreens) when you have the symptom.