Selfish

Does anyone had or have the existential fear of our brain functions. I have so much hyperawareness in my thoughts, I focus all the time in my feelings and my intentions in order to check if I am strange or not and if I have control of my actions. I do psychotherapy 4 years and I thought I was fine. But this June I had a derealization episode(or ocd) , after that a depersonalization episode (or ocd) and after that I have obsessions about our existence and that every aspect in our lives has to do with our brain and for some reason these thoughts scary me. I know that at some point is ocd but I am very confused why this thoughts scary me so much. I observe others and I am curious how it's possible not to think about that and this make it worse . I am so anxious because obviously we are our brain ,I know that and brain has to do with everything,but I don't know why it make me anxious and if it's possible to live without these thoughts. I do many compulsion but my biggest is to figure out if I have compulsion in order to figure out if my thoughts is ocd or delusions. It's so real and these thoughts really bother me. Any other with same experience?

When I get a new theme the previous theme completely disappears/seems unimportant until there is a trigger for it. Is circling themes a very obvious sign its ocd? If it’s something actually serious in the relationship wouldn’t I get a worse feeling than just “omg this is bad I need to ruminate and search and seek reassurance” There is always one theme in control and my main focus until a new/ returning theme takes its place and the other theme is shoved away in the back of my mind like nothing until it circles around again. Even if the theme I’m currently having seems like an actual problem/super serious a different trigger/theme can occur and the “serious” theme that i was panicking over thinking “is my bf a bad person” can be wiped away and replaced with another theme. Is the constant thinking something is super serious but then it can easily be replaced with another worry a big sign it’s ocd?

I don't know if anyone else has a similar problem, but I think one of my themes is worrying how others might perceived me. For context, I used to be very shy and sometimes don't have good control over facial expressions. This leads a lot of people to believe me being hostile to them, even though I don't mean to be. Now, I moved a different city and am meeting a lot of new people. And this makes me really worried of leaving bad (first) impressions.