My weight..

so I'm 13, I'm 5'6 and I'm 125 pounds.. I've always had a problem with my weight because when I was in 5th my mom called me fat.. so I starved myself for a week. I haven't felt the need to go on a diet until this past week.. I weighed my self and it said 125.. my mom called me a fat a** a few days ago and now I'm debating whether I should starve myself again or not.. I just don't know what to do anymore. I don't trust my mom. My parents are divorced and my dad lives in illinois.. what do I do?