Am I right to be upset

My MIL cooked dinner tonight. I was at work. I didn't eat at work because I expected some of the food to be left for me, why? Because I'm the one who bought it! I get off work, hungry, because I thought there would be food waiting for me, plus I work in a gas station and didn't feel like greasy food, and there's nothing! A whole pound of hamburger meat and a double box of mac and cheese is fucking gone! But the dishes are in the sink for me to do tomorrow. I know it wasn't just her, because her boyfriend is a dick and will eat everything, but still. I paid for it. She always leaves me and my husband a plate when she cooks food we buy. I just had my pregnant heart set on hamburger meat and there isn't any 😢 I know it's so pitiful to be upset about, but I really am kinda upset. Like not start a fight upset, more like I'm in my room crying (pregnancy hormones).