Being the 'poor' friend

I'm 15, I turn 16 in 8 days as of right now. I really hate my birthday, especially right about now. I just had a conversation with my mom about us not being able to do certain things on my birthday because we're living with my grandma right now (sleeping in the same bed) and she wants to be able to move before Christmas. I know it sounds bratty and entitled to say but, I wish I wasn't 'poor'. I feel even weird saying it, even though my friend says by conditions I've been in, in the past couple of years, I'm considered poor. And I sit and watch kids around me talk about how they had a party and so many kids came, and they got so many presents, and they had the best time ever or how they went to Universal for the weekend. When I'm stuck here worried if I ask to go out to eat will it affect us getting into housing. And Im not going to act like Im not jealous, I am. I HATE seeing how others talk so easily about spening hundreds of dollars while I have to worry if I have something to eat. And how people look down on me because I repeat the same outfits. How I've been wearing the same hand me down sneakers for 4 years. I HATE IT. I understand its bratty and spoild to say but honestly after having to endure years of bullying I don't care.