Blank mind/brain fog - don't know what is wrong anymore

I definitely had more "typical" DP symptoms when this first started like weird vision/feelings of unreality but now I don't even know .. I mainly suffer from brain fog/blank mind/cognitive issues. I don't feel anxious, I exercise, mediate, try to do as many relaxation exercises as possible... to no avail. It affects me regardless of mood or stress level. I could be with friends, laughing and smiling, and I still have this disturbing awareness of my mind not being quite right.

Sometimes I think I am normal or that I'm just depressed, but then I'll do something and be reminded that my thought process is not right. I have so many random hobbies that I'll force myself to do but nothing distracts me fully. Or the more I try to participate in some engaging activity that requires me to think a lot, the more apparent it becomes - obviously. People say "just don't think about it" - I'm not thinking about anything, the problem is my damn thinking.

Is this a neurological problem? Should I try taking medication? I'm worried about meds making it worse but I will eventually kill myself if this seems to continue indefinitely .. Sorry for the rant, I just feel so misunderstood and crazy these days.