I've had anxiety for 8 years and OCD for about 4 years. I've experienced some of the things that you have, for example, the feeling that life is just a dream and everything seems fake. That feeling would make uncomfortable and increase anxiety, but then I started Mool Mantar and things slowly started to get better, it took its time but trust me things will get better. I remember the first time I read the translation of Chaupai Sahib and made me feel so much better.
Watch some videos on things like OCD with intrusive thoughts and you will realise your not the only one with these problems. Also make sure you see a Doctor, the quicker you do the quicker your problems will go away.
When you start feeling anxious or worried put some headphones in and listen to simran/kirtan, try these
If you need anyone to talk to feel free to message me, talk to the sangat on here or https://www.reddit.com/r/Sikh/. Or talk to people with similar problems https://www.reddit.com/r/Anxiety/ or https://www.reddit.com/r/OCD/.