Just wanted to start this with this might be triggering so read with caution.....

In my experience it can happen. My cutting got to the point where I didn't even remember doing it. There were holes in my memory, blackouts after cutting, waking up with fresh blood staining my bed. At my worst it was happening at least once a week. I learned to be mindful, able to realize when I was being triggered that badly. It took a lot of practice but eventually was able to stop them from happening. If you need someone to listen I'm here, just shoot me a pm.