Sudden Extreme Dizziness And Nausea Am I Hypoglycemic Possibly?

Am I Hypoglycemic possibly? - sudden extreme dizziness and nausea

Ok, I'm completely frustrated. I was in the emergency department for the last 2 weekends (and uninsured). Extreme sudden headaches that last hours, sometimes days, dizziness, nausea, Shaky (as if) they do not have enough to eat on this day do not eat enough. I am eating well and now, more to drink only a glass of sweet tea and ate an apple with the hope to increase my level of sugar in the blood. I still feel weak! They tell me there is a tension headache, but it is a headache. HELP!