Pressure from people to eat more!

I've always had a small appetite. I get full fairly easy since I lost about 30lbs a few years ago. Now that I'm pregnant everyone around me keeps telling me to eat more, asking if I have an eating disorder or just always having a comment about my eating habits. I eat fairly healthy, and have gained about 20lbs this pregnancy. But I still get those people that for some reason want me to like binge eat! Anyone else having a similar problem?