I think I am developing a ED TW?

So basically for the past month I have been declining to eat big meals and I eat snacks through the day instead. As well as over eating days at a time. Which is weird for me. I used to eat full burgers and enjoy every bit, but now I only eat a quarter to half and feel like I will get too “fat”. After I eat anything I look and the mirror and suck in or try to got the the restroom or both.

At school I try to skip lunch unless I’m really hungry. Recently I’ve been thinking of throwing everything up, so instead of eating I chew gum and it works for the time being.

Any advise or thoughts?