Am I going to be alright?

Is it normal to feel exceptionally down, depressed and sad on your birthday? I know birthdays are supposed to be a happy thing, but I just seem to slip down more into that black hole. Every depressing thing, sadness, worthlessness, uselessness, failure, emptiness, and aching gets so intensified and I feel like I cannot breathe. There's this gaping hole inside of me, I feel it so deeply today, and it scares me.

I can't even feel like I can be happy on normal days, and now I feel even worse.