Nerve damage from cuticle biting?

I have a really bad habit of biting my nails and cuticles when stressed. I know its disgusting but its so hard to stop. I was especially stressed today and I think I hit a nerve in my pinky. It feels bruised but also tingly and numb. My question is...did I do permanent damage or will this heal? Needless to say, its a big wake up call that I need to try harder to stop. But the damage is done so don't tell me its my own fault or whatever. I know that, I just want an answer to the question. Thanks!