Im suicidal and need help:/?

Ive been depressed, and have had suicidal thoughts for 4 months now. Considering some of the past days ive had im surprised im still here. Todays my birthday and i might seriously hurt myself. No one even wants to celebrate my birthday because no one cares. I have had 1 suicide attempt in the past and i might try again today. Its either suicide or ill just cut myself like usual. My parents havent even noticed the fact i have over 15 cuts on my arms. I have horrible headaches and dizziness from a concussion i got which its making it really hard for me to even walk. Even my boyfriend dosent see how much pain i go though, its probably because i put on a fake act everyday. I cant take this pain i go through everyday i just want to end it now. Btw im 13