17M 

Recently I've been feeling different, derealizing/depersonalizing a lot more and a lot more intensely than usual. Episodes that bring an existential terror that would have been incomprehensible to my past self. We were shown a documentary on schizophrenia in my Psychology class recently, and ever since then I've been attributing every symptom I experience to that possibility. 

If I have a harmless sleep hallucination, depersonalize, anything like that, I immediately Google the symptom and always track my way to a website that confirms my greatest fears. At the same time, I try to reassure myself with other information I find, such as that hypnagogic hallucinations are common or that BPD could be another unfortunate, yet more comfortable possibility. 

I've been trapped in a cycle for about a week in which I seemingly convince myself that these symptoms are worse than they are - at least that's what it seems like when I finally get a burst of relief and can look upon my previous anxious thoughts with self-reassurance. No matter what, I always wind up back in a disconnected and terrifyingly anxious state of mind.

Sometimes I find myself searching again for the same symptom I already assured myself is nothing to worry about, just to open up the wound again and repeat the cycle.

I have trouble sleeping almost every night, keeping myself awake with worries regarding every little detail of my thought processes and what could be waiting for me.

I genuinely have no idea what is actually occurring besides that anxiety obviously plays a part.

Has anyone had any similar experiences and what could I do to ground myself for more than just a few hours?

PS. Idk the significance of this, but I'm diagnosed with CPTSD.