I thought you could be on this site if you've had some sort of trauma even if you had no diagnosis.
Yes.
It was similar to what I heard myself say in a flashback and I was confused about it
Yes, I hear you. I genuinely do.
This is very closely related to an issue that you've been ruminating on, though. And I think therein lies the most likely explanation. The more you think about it, the more you think about it.
And what concerns me with that, is that while asking about it here is allowed, the responses you will get are through the lens of living with ptsd.
Whether or not you've been diagnosed with ptsd is a seperate issue. The fact remains that you are living with a serious mental health issue, which is not ptsd, and which is clearly your primary mental health issue. Hence the support worker that you have.
You have mental health professionals involved in your care, but none of them have diagnosed you with ptsd. When a mental health professional sees a trauma issue playing out, and causing distress and loss of function for a patient? They are very likely to turn their mind to the question of whether the person has trauma-induced condition, irrespective of whether the patient has asked to be assessed. That's part of their job.
Your primary mental health condition is the first lens that I think a lot of your questions should be considered through. Your primary condition is not ptsd.
If you spend enough time ruminating on this issue, and analysing everything through the lens of ptsd, I think you will miss the kind of insightful and helpful responses you would get if you asked a more relevant audience. I think the answers to questions just like the one in this post can be answered very meaningfully through that lens.