They shouldn't have screamed. They need to be loving and supportive, a source of safety and comfort--not fear or shame. If they're good parents, they should be a part of your recovery. If not, I'm sorry, and I hope there are other adults in your life who can support you.

I had a friend tell my mother I had cut, after it stopped, though. I shudder to think how things would have turned out if the people I talked about my struggles with as a teenager had told my parents. We, my friends and I, were all in similar boats, so it was more solidarity than anything. We all kind of had the opinion we could help each other more than anyone else could help us. I of course eventually sought outside help, on my own terms though.

Your friend cares about you, and hopefully, your parents do too. It can be shocking and painful for all involved though. The pain shouldn't be something you face alone.