Is it possible for me to be hyperglycemic or hypoglycemic?

I'm a healthy 18 y/o girl. I weigh around 110 and am active (I play softball). I experience strange symptoms when I consume sugar. So far I've discovered when I drink coffee, energy drinks, gatorade, etc., I get sick. I don't get the high and then crash. I instantly feel weak, nauseous, cold, dizzy, shaky, my hands get clammy, I get a headache, and my heart starts pounding. I get winded really fast when I do physical activities. I'm also thirsty all the time. I've had a few people say it sounds like I might be hypoglycemic, but they're not medical professionals. I have to go to the doctors soon anyway. Should I tell her about this or is it nothing serious??