Hypothyroidism!?

I am a 16 years old female. I am about 5'4'' and 145 pounds. I have been monitoring my eating and ingest less than 2000 calories a day and I eat fairly healthy. I work out at the gym and run about three times a week and I burn around 300-400 calories from exercise. I have always been fairly active, but I have been staying to that routine for the past 5 months and I have not lost any weight. I have the disfortune to have a very bad metabolism for someone my age. I am always tired, even when I wake up for 10-12 hours of sleep (I typically get about 7 hours M-F). This spring I have developed allergies and I frequently get sinus infections. I also have puffiness and circles under my eyes. Do you think I should get tested for hypothyroidism? I do not have any family history that I know of of any thyroid problems and I am pretty sure I have enough iodine in my diet.

See a doctor and tell him your symptoms.

You could have an underactive thyroid, you could have sleep apnea, but all these are guesses, so see a doctor.

You should see your doctor and be checked for thyroid problems, anemia, etc. Fatigue can be a sign of many problems, especially accompanied by slow metabolism. Good luck.

It's pretty rare in someone your age but in any case you should have a thorough lab workup done.

Look into Chinese Qi-kung . Basically, it is only 20 minutes of very easy moves, mostly limbering the joints whilst capturing Qi energy. Towards the end we rub the adrenal glands and the face and then the thyroid to get everything working properly. (Can you locate your Thyroid?)
After only a month, it seems I can't get through a day without first doing my Qi kung.