I know you're probably not a mental health professional, but do you have any idea why I am so afraid of anything having to do with violence?
You are right, that no one here can really figure it all out in terms of any diagnosis you might have. I'm really glad you are going to go see a new therapist. As for being afraid of violence - it makes sense to me. You experienced an event of some violence.
It also sounds like you had anxiety before all of this, and now that anxiety is understandably worse.
You have a real struggle with anxiety that has been made worse by some real situations you have been through. Finding a really good therapist with experience in anxiety is a really important step. There are a ton of very effective treatments for anxiety symptoms, including being really scared of perceived and/or real possibilities of violence. The therapies ususally take some time, and a bit of hard work, but I think you can do it. You have a ton of insight and self awareness, far beyond what most young people your age have. You are also really bright and resourceful.
You may or may not need meds. It stinks your parents are jumping to that solution and missing the importance of at least doing therapy at the same time. Meds do come with some drawbacks, but sometimes can be worth it. I have been on a few meds that were a doozy, until I found one that really helped. But meds are not for everyone.
Right now, focus on just the next step of seeing the therapist. If your parents end up taking you to a doctor for meds, you can tell the doctor you want to do therapy, and about any concerns you have about taking medications.
No matter the reason why you feel anxious, there things you can do now to manage the anxiety until you get into therapy to sort everything out. Google or search these forums (there is a search option at the top) for "grounding techniques" or check out DBTselfhelp.com. Grounding and DBT skills are things you can start working on learning now to begin to find a little relief from the anxiety. Grounding and DBT skills are used for a number of symptoms for a number of mental health struggles, especially anxiety and fear.
And good work for reaching out to a friend and talking to your parents! Way to go!