I'm not eating breakfast or lunch anymore 😔

I last weighed myself in August I'm 5 5 and weigh 145 pounds or at least I did I don't know whether I've lost weight or put it on or whether anything has actually happened I've stopped eating breakfast I just tell my parents I don't like breakfast food even though I live brioche but it's too fatty and for lunch I sometimes have a sandwich but I have to eat dinner because my parents make me I'm always hungry but tell everyone that I'm not hell im starving right now I'm already ugly and I'm scared I'm gonna die alone because I'm fat and ugly I'm quite smart not to brag or be bitchy but it's about the only thing I have going for me and of course my sexy boobs  so I kinda flaunt my intelligence I just want to be thin and gorgeous like the girls I see on here and every where like in the changing rooms in pe and in my classes and at pool parties unfortunately my mum passed down the fat gene to me ( yes it exists) so thanks mum love ya but I haven't had a period since I weighed myself I think it's because school started again which always stresses me out and of course because I'm not eating as much most days I have less than 1000 calories it's already effecting my school works though which sucks because I literally have no energy, I find it hard to be happy now I just don't have enough energy to be im just glad I have my best friend to kick some sense into me from time to time