I can empathize with you ... I am triggered by EVERYTHING. Thin people, large people, fit people, bodybuilders, magazines, models... you name it, it probably triggers me. My absolute biggest trigger is others talking about how little they eat or claiming that they are going to "become anorexic for a few weeks". NO ONE who has not lived with it knows what it's like to have an eating disorder- and they won't understand. That is what gets me.

Anyways, it isn't selfish. You are not eating too much. Try to not let the small things get to you too badly (I know easier said than done!)