My daughter is 18, in the past 3 wks she has been having a Racing Heart, shaking, very tired, & extreme thirst. At first it was when she drank soda, did not matter if it had caffine or not. then it was after meals. every night after we eat she has the same symtoms. We have been to the dr, they have done every blood work & pee test they can think of. She is not diabetic, her blood sugar stays around 90-105 before & after meals. I have her on a diabitic diet, she only drinks water now. We still have the same issue. Just would like someone to tell me what they think. Thank you for your time.