question: Hi doctor, I am an 18 year old female. I weigh 110 pounds, and I am 5 feet tall. I have been feeling a bit weird lately. I have been feeling tired; like no matter how much sleep I get, I still feel so tired. And when I eat any sweets, I feel weird. I do not know how to explain it. I feel like my heartbeat gets faster sometimes, but when I check my pulse, it feels normal. But today when I ate some chocolate cookies, I laid down because I felt tired and weak. My left arm felt really weak. Then when I got up, I got really dizzy, like more dizzy than I usually get when I wake up, and I had to wait a few seconds so that I can go downstairs without falling. And I always just want to lay down. I always feel so lazy and do not really want to do anything, and I do not know why. Should I be worried?