I'm 16 years old, female. I'm underweight since I had eating disorders which I'm trying to recover from, but even I've been eating well, I have many non-related symptoms:
Yellow skin, occassional numbness all over my body, occassional diarrea and nausea, burning sense in my stomach, mood swings, constant tiredness and sleepyness (even I sleep 7-8 hours every night), when I'm laying down and then I stand up quickly I get blind for 5 or 10 seconds and I see little lights and flashes and then they dissapear and I can see again, bloated lower belly, light untolerance, emotional hypersensibility, anxiety...
I'm not anemic, 'cause I have tested my blood 2 times in 1 year. And everything looks fine. It cannot be lack of vitamins since I used to take vitamins and they didn't change anything.
I'm usually OK early in the morning, then by 10am I start to decay and decay to the point I just feel like sleeping. I take birth-control pills but they're completely controlled by my doctor and he gave me specially made for young women pills.
My mom thinks I have a peptic ulcer, from smoking and the caffeine, and months of lack of food. But I've been eating a lot more than I used to, and I'm still losing weight.
I haven't go to a doctor yet because I'm not quite sure of what doctor should I see.