Derealization maybe?

So this is the main reason I am here. I need a diagnosis. I read a lot after derealization, depersonalization and dissociation and I really feel like I have those. I have lost touch with my emotions and reality and started really recently to have hallucinations (little ones and only twice but it really marked me). My derealization (if I really have it) is here always I only remember one time when it completely left. I can't keep going like this. My dissociation (after what I read) really affected my memory. It has gotten to the level that I have problems remember my age and what year it is exactly. It ruins my relationships (no romantic ones). Most of my memories seems fake or not mine. I have no idea how to describe myself or what I might like (I don't know the answer for simple questions like: what's your favorite animal etc). My head is what I can call a big mess and I can't really explain it. This is my first post. I honestly don't know if this I am supposed to post that here but I did