Have I condemned by Brothers soul?

I made a post on this earlier and someone's response has really messed with me. I suffer from OCD, and I recently made the choice to take things slower in my faith as my mental health has gotten quite bad. My intrusive thoughts have varied throughout the years, I've had this disorder since a child and I'm now 20. One of my main themes is around religion (scrupulosity). Specifically fears of following the devil, or selling mine/anyone's soul. These thoughts have been a real issue for years and I think it has built up quite a lot of fear in my life.

The main issue I am dealing with right now is the reminder of what happened almost a year ago when my OCD was really bad. I was travelling to see my Grandma with my Brother. It was a 7 hour journey and from the very beginning my OCD was attacking me. One of the most difficult themes I deal with is moral dilemmas. My OCD will give me these horrible moral dilemmas where it feels like no matter where I turn nothing good will come from it. On the journey to my Grandma, I was getting intrusive thoughts about selling souls. It gave me thoughts that I had to choose between mine or my Brother's soul.

When I arrived at my Grandmas in my room I started the long compulsion of arguing with my self about the thoughts of selling souls. I was repeating to myself that I would never do it, but my mind kept filling me with thoughts like "you have to choose". What is even harder is that OCD can also create false memories so I can't even remember what I said. But I'm fairly certain I said that I wouldn't sell my soul because if I where to do that it would bring negative consequences not only to me but to my family as well. So I'm worried that I said I would sell my Brother's instead of mine and I hate myself right now. I feel like a selfish shit who values their own life over others. I'm trying to be compassionate to myself because my mental health was bad back then, but I still feel like I've made a grave mistake.

The reason why this affecting me so bad now is that when I was arguing with myself, the light in my room suddenly flickered off and then I heard a book or something fall in the room and make a sound. The house is very old and the light in the downstairs bathroom also flickers off but the fact that the light turned off and the book fell over seems so scary, like it's an evil spirit or something. Now I can't get past the fear that my Brother's soul is damned because of me choosing to protect myself. I know biblically selling souls is not something that can be done especially others soul, but the fear still feels real. Why did the light turn off? Why did the book fall over? Especially after saying I would rather save myself??? It's so selfish and I really hate myself right now.

I went on chatgpt to get some relief and it said that wanting to preserve your own life isn't selfish but a normal human response, but I just feel selfish and ashamed. Also OCD can pin you into corners where it feels like there is no way out. This is the situation I was in, where it felt like I had to answer. In my mind if I chose to protect myself I could then protect my family including my Brother. But I don't know. I'm really struggling with this, and the light turning off and the book falling is really scaring me.

The response on my previous post from someone was that they had a similar experience where they felt like they had to choose between their mum and dad and they chose their dad. And the next day their dad died. This is really scaring me now.

I love my Brother so much and I would never want harm to come to him. I hate how I used to be and I want to change but this is really holding me back in fear.

Please any help and advice would be appreciated, and please could you pray for me and my family.