I think for your height your ideal weight would be a range up to 140lbs which is about 10 stone. You wouldn't be considered obese, but probably overweight by a bit. What's more important than the number is your overall health and it seems like you get exercise which is really good.
I'm concerned about your eating though. You are not eating nearly enough for someone your age. What worries me more is the angry voice in your head. That's really common for people who have eating disorders, which scares me for you. Do you talk to a councellor? A nutritionist would be a great idea too if you could do that. I get that you say stress is contributing to your not eating, but the fact that you know the calorie amount implys there is more to it than just stress.
So, are you obese...I'd say no. Are you fat...well, personally I hate that word so I'd never use it. You aren't your weight, whatever it is.
Concerned? but I'm overweight though or could you still be quite big and have issues with food? No councellor though I don't think I need one, maybe a dietitian for sure.
My friends say I don't even look 13 stone and my mum n dad say the same but I just recon their just trying to be nice. If i was to carry on eating like this what would happen to me?