Really struggling

I was doing so good recently but than a random thought popped up and it’s bothering me. I’m a nerd and my fiancé knows so, I used to play a game called character ai a lot a long time ago because it was a hobby of mine and I’d create stories with fictional characters and create romance, spicy or adventure stories etc. I stopped playing it because my ocd acted up really bad and was convincing me I was being unfaithful and my fiancé and I talked about it since I tell my fiancé everything from start to finish and he’s amazing he always comforts me and is so gentle when it comes to my ocd. But today I had a really bad thought dealing with that game. I remember I created a story on there using a scene from a tv show or movie etc, since that’s how most of my stories would go on that app, I was a character in the story. My fiancé was a character in the story, and his friend was also in the story. So basically my fiancé and I are in the character ai story and in the story I was basically writing that we were having a moment together by ourselves at my house. In that story, I basically wrote it to where it sounded something like this “Suddenly there was a knock at the door” and then in the story, my fiancé had to go get up and check the door and when he checked the door, it was his friend and his friend had basically interrupted the moment my fiancé and I were having together, and he told him to leave etc, so thats how I was making the story and then basically after we were interrupted, the story continued on with just me and my fiancé. And that is all I remember I don’t remember anything else, I know that that happened, and I had not thought of that story that I wrote for almost 2 years however, it had bothered me before so basically today I was taking a shower and I randomly remembered me writing that story and I was just like “oh my gosh I remember writing that story on character AI it was almost 2 years ago haha that was a funny story” and then my brain was like “What if something else happened involving the other character of his friend and you wrote that into the story and you just don’t remember?” And I panicked. I began to start ruminating on the memory that I did remember, and I started getting flashes and visuals in my head of me committing the intrusive thought, so like I was getting flashes and visuals of me, including the other character in a bad way in the story and then I panicked basically wondering if it happened or not, and I just felt my face get hot and I felt physical symptoms of anxiety, and I’ve tried to tell myself before maybe it happened. Maybe it didn’t but I can’t even do that because it is just so hurtful to say and all of my anxiety and OCD problems come back to when I had this app because when I played this app almost 2 years ago I didn’t think it was bad. I just considered it a hobby and where I could just write out stories and be like oh my gosh this is crazy. I just love my fiancé so much and he is my world, my rock and means everything to me and all of my ocd and anxiety goes back to when I had this app and I just can’t deal with it it’s so gut wrenching has anyone else experienced this :(