Hi there,
Don't be nervous. It is normal to question everything.
I understand your struggles, I understand you feel disassociated as your brain does not function how you want it to function. It is very hard to trust people and you will be worried about how they see you and if they can or will support you.
My advice is confiding in one person first, the one you trust the most. Explain how you feel, explain how you struggle, explain how you think you hurt them. Walk with them so I can be easier to talk about it. Ask them to hear you out, keep it simple, and talk about how you feel and how you feel about things.
Don't be upset if you don't get an answer straight away. You needed time to come to terms, they might need time as well. Explain to them what you expect, maybe just a listener. Just a friend who is there for you.
Don't give up hope, most people try to understand but make clear what you need from them.
Good luck you can get there.
P.S. You might think you made a bad choice, you will never know if you went the other way it would have had a different outcome!