Am I fat/ugly?

Been having so many insecurities lately, I’m 15 and schools so stressful, people are always so rude etc, I just need a confidence boost tbh, I don’t like myself a lot, every time I look in the mirror all I see is a huge double chin, a massive nose, my stomach coming over whatever jeans I’m wearing, sometimes I get to the point when I start thinking of harming. My parents always tell me that I’m not, I feel like they are only saying that to make me feel better not bc it is true 😔