Coworkers have noticed I've shrunk apparently

I got asked today if I shrunk. I thought they meant did I get shorter at first and said well no I'm still the same height. I was then told no you've lost weight. I've always been scrawny but am now scrawnier due to not eating much and or crappy health. I did notice my clothes are baggier but I thought my work shirts just stretched out or something. I don't know how to feel about all of this.