You need to eat more fruits and veggies to keep your surgar from dropping. You might want to mention that to your doctor too because you could have diabetis which can cause the high blood presure as well as the surgar dropping out to nothing. Are you drinking a lot of fluids? If you are drinking more than usual that is a very good sign that you may have it. Please make sure you are eating enough to keep your surgar up until you get in to a doctor. It wouldn't be good if you passed out because your surgar got too low. Take good care of you.