Im scared 😞

Yesterday I forgot to take my medicine for my anxiety so I had an attack today after my brother stressed me out. I promised I wouldn’t ever try but it was so bad I tried to cut myself with one of my keys. I feel like rather than getting better I’m getting worse and I’m only 16 years old. I went over to my best friends house and he calmed me down and I told my mom but I keep thinking about how I want to kill myself. I don’t know what to do I want it to stop. I want everything to stop. G