My husband 67 yr.old. blacked out two weeks ago..is diagnosed as being a hypoglosemic? But since the blackout he has gotten worse...extreme thirst(nothing helps to quench the thirst), water , juices, diet drinks etc., he has lost weight, no energy, weak, when he eats , he has to lie down because he feels so bad, has bloating, so he won t eat regular meals due to making him feel tired??? Has an appointment this week, what should be ask the doctor??? All his blood work comes back fine (being l00 or under)..upper GI test,showed gas only??