Exhausted and no one understands

My friend from high school is visiting. Mind you, she has never been pregnant. I have been slacking on house work because of how exhausted this first trimester has made me. I sleep a lot and feel like I need to sleep a lot. She wants to force me to wake up and clean and do housework, but I'm just tired and she doesn't get how tired I am or she thinks I'm exaggerating. It's really ticking me off. Anybody else have something similar going on? Am I just being lazy?