I’m 15 years old, go to a really hard high school and used to eat like a truck driver to calm my stress. After winter break (about 5/6 months ago) I noticed something weird. I am very involved in sports and love to run and because of that I need to eat a lot, but one day I woke up and had my typical huge breakfast then lunch at school and I got a plate of food and I thought I was going to throw up. It wasn't gross at all, and it tasted good, but the best way I could describe it was that my body was rejecting it. My throat would in a way close off and I'd get really gaggy if I tried to swallow it and this has been going on for 5 entire months where I can literally only eat breakfast for some reason. My friends are starting to think I'm anorexic because I used to eat like 4 plates of food at lunch and now they're lucky if I can eat a fruit cup. I told my mom and she's been giving me protein shakes and I can get those down but not for very long, I can only drink about half of it. But also, my weight has fluctuated a ton this year. I went from about (approximates) 130 pounds to 160 pounds then down to 140 pounds, and it’s for no reason whatsoever. I know for a fact I’m not anorexic because I love food (and my life) way too much to ever give it up, but I’m just concerned. I went to my pediatrician a few months ago when this was about a month in, and she said I was just way too stressed out and I needed to sleep more. I’ve been getting 8-9 hours of sleep, and that didn’t do much. I’m still exhausted all the time and I had to drop out of track because I can barely run a lap without my legs getting like jelly. My menstrual cycle is also all over the place, I went from having the regular monthly period to having one every other month which started in about November. I told my mom all of this again recently and she said she was going to try to find a specialist. Should I go see my physician again, and what kind of specialist would I see for this kind of thing? Also, any guesses on what it might be?

I had the same thing happen to me, it is strictly from growing. Eat when your hungry and when your not don't eat as much. Your body will tell you when it is hungry and when it is that's the best time to eat something. Eat too much and you will feel sick and tired, eat too little and you will feel the same way, just try to balance it out.

You should definitely see your doctor again. We can't give you a diagnosis over the internet, and even though rjthom15 had something similar happen, doesn't mean that his/her experience is the same as what you're going through. It's very dangerous to follow medical advice given over the internet. It's also unwise to post that someone knows what's going on, and for that person to tell you how to fix what they don't even know you have.

It could be a simple matter of adolescence, but that's not a guarantee, so please, do not follow rjthom15's advice. Instead, see your doctor.

You already know the answer to this question... go see your doctor... if you can't get results there ask for a specialist, you know your own body better than anyone else and you know that something is not right... Could be something simple but it could also be serious, you won't know till you follow up with your doctor.