Have you felt this way before? I agree there might be some trigger and that it might be subtle. For example, if I feel bloated, and then weigh myself and am a little over my normal weight this can trigger me big time. Maybe you just felt bloated, and then thoughts impacted you from then on, I don't feel trigger has to be comment from someone else. Society gives us enough comments. Some people believe that because fat is not an actual feeling, "feeling fat" is like feeling sad, or something, perhaps there is some other emotion being expressed in this way. I feel I am not expressing that well, but anyway, I think its good that you realize what is going on. The starvation in itself can be addicting, and as someone else said could be good to speak with someone about this.