Cellulite at 13?

Okay so a little back story... I’m already pretty insecure and my mom is always making it worse. She always has some comment that makes me feel so horrible about myself. I have really bad acne and she is always commenting about it. It’s not like I don’t notice it and what does she want me to do about it? It’s not like I can fix it🙄 Lately, she has been calling me fat after I finally learned to accept my body. I ignored it until today I saw that I had red scratches all over my legs. I asked my mom what they were and she said it’s cellulite since I’ve been gaining weight. I feel so horrible about myself now...