If ONE MORE PERSON eats my food😡😡

Honestly. I put food in the fridge at work (I work with all women) and it gets eaten. First of all, who the hell eats someone's food that they've already touched?! And secondly, how do you take food from a pregnant woman?😑😡 Today I came home, my brother is over to visit, he's eating my lunch for tomorrow. I actually broke down and cried. Please tell me I'm not alone in doing this😢