Assumptions & Reprimands

Is anyone else getting tired of this stuff? I'm 31 weeks along and since getting pregnant, everyone has just assumed that anytime they offer food to me, I NEED to accept that offer. I'd like to keep my weight within a relatively decent range so no thanks. And as soon as I decline, I get bitched at or constantly asked "why not?" Maybe, JUST MAYBE, I'm not hungry and don't want to eat just for the hell of it. I'm pregnant. Not a garbage disposal.