Eating disorder?

I go through phases where I eat loads of junk all day and then a few days later I can not eat anything and feel fine, my friend told my it's affecting my mood ad happiness but I'm not sure if that's it.
I don't eat at set times like breakfast lunch and dinner I just eat when I want to eat and most of the time I'm not even hungry, I also never eat breakfast.
I'm pretty skinny, I wear size 8 clothes and currently weigh 8 stone 7.
Do I have an eating disorder?

You may be skinny but that says nothing about your health. To much sugar for 3 days straigt causes severe emotional mood swings without really being aware of it.
Just to be on the save side, drink lots of water and gym. That will improve health 10fold more. Then you can eat junk.

Yeah!! you may have eating disorder. To be healthy you must improve your life style. You will have to be more disciplined and self-controlled. Proactol

I guess it could be called some kind of eating disorder? I have something like that too, but i eat not really healthy but atleast healthy enough i hope, some days i can eat ALOT and some days almost nothing at all cause my stomack kinda doesent accept the food, but i learned how to deal with it, i simply eat when i can eat and when i "cant" i can have food beside me all day and just take a little at a time, like taking a bite every 10 minute...well not every 10 minute but not much at a time but often, even if im not hungry i know i need it, and you can eat just a little when your not hungry :)
and breakfast is really important, you can atleast wait an hour before you eat but you HAVE to eat breakfast, you can eat a slow breakfast, during an hour or so...just chill out in front of the computer and eat slowly, its pretty comfy :)

Yeah!! these are all the symptoms of food disorder. You should consult a good physician to get treatment. Advanced Acai