I have felt that way. I have acted on those feelings.

PLEASE please please. Believe me when I say: acting on those feelings will NOT help. At best, it gives you temporary immediate relief during the end of the act (while being in pain) and afterwards you hate yourself for doing it, and there are bad long term effects that make it more likely to happen again.
It can be an addictive habit that forms more easily than you would know.

PLEASE DO NOT GO THERE. Please, trust me, I'm talking from experience. I'm lucky not to have marks up and down my entire body. But I do have scars.

Your thoughts are probably stemming from those repressed feelings you were mentioning. Understand that there are other ways to get those feelings out, that are much better. Try to figure out what's behind all this. Reach out for help. Consider talking to a friend who you think might understand, going to a therapist if there is access to one, because trust me you don't want to get there.

I''m really glad you posted. It's a great first step.

Continue to post all you like and, you can pm me too if you wanted to talk or .. anything really.

Loads of hugs
~turquoisesea