Concerns about Testosterone and Weight Gain

I'm really nervous to start testosterone because of the fat redistribution and weight gain. I already don't feel good about my weight as it is and I already get comments on it from people. I know testo will help me feel better in other areas but it's going to make me feel worse in this way. I've always struggled with weight loss and I've always been on the chunkier side. I don't know what to do but I can't really talk to my mom about it because whenever I talk about my body she tells me to go to the gym but I'm so tired after classes and I fall back into eating disorder habits.