moms making me go crazy

I seriously don’t know what to do. She is the most dramatic person I’ve ever met in my life and I live with her on top of that. I know all kids say that abt their parents but I’m telling u my mom takes the cake. I’m 19 and I’ve been doing a calorie deficit for months now. I’m not overweight or anything I just wanted to feel better about my body and loose some weight. My mom has been barely supportive of this and complains to me every single day. She’s keeps saying I’m getting too skinny and she makes it sound as if I’ve lost all this weight. Which doesn’t make me feel good it makes me feel as if I was big before. She keeps trying to get me to eat more and is always asking me what I ate for lunch as if I’m 12. Tomorrow I go to school for a few hours and she started a fight with me because she doesn’t think the lunch I’m bringing is good enough. It just sucks because I’m finally feeling a bit better about myself and my body and all she can talk about is how I need to eat more. I’m NOT being unhealthy! I’m 5’9 and eating 1600 cals a day. The perfect amount to loose weight healthy. Then some days she’ll tell me she’s calling my doctor cause I have a ED. Mean while I don’t at all and she’s overweight!