Stress

I've been having a really tough time lately. I'm a senior in high school so my applications for college need to be done soon, I'm taking 3 AP classes which I know it's a lot but I'm having a hard time in them. I feel like eventually I do is wrong and it didn't really help that my parents keep yelling at me when I take the dog out an hour later than I should. My group for homecoming split up so now I have to return this beautiful dress and I just know my mom is going to be mad at me for telling her I need to return it. I am starting to fall behind on my homework and I have been crying everyday for the past week because of just how much stuff I have to do. I feel like my life is crumbing before my tearfilled eyes. I'm not asking for help or anything, I just need to tell someone because I feel like I'm headed downhill.