I can definitely relate. I got depersonalization when I increased my activity level and starting interacting in social situations again. I genuinely felt like my life for the past 6 months had been a dream. I felt like I didn't have a soul and was observing myself from outside my body. Luckily this only lasted a week!

I also get a 'detached' feeling sometimes when I am having a conversation with someone for an hour or so. It usually happens when there is also some background noise, so I'm assuming the effort it takes to focus on the conversation is very taxing on my brain.

It's an awful feeling, but it certainly won't be there forever. Your brain still has healing to do. Just keep resting and doing the right things for your brain.. It will subside over time.

When I start feeling confident is usually a scary time for me because I tend to think I'm invincible and can handle ANYTHING. Just recognize that this is part of your concussion symptoms and your brain's way of telling you to slow down. If I would've been smart 6 weeks after my injury, I would've prevented 8 months of hell.

Just don't want anyone to make the same mistakes as me.. Good luck and hope you feel better!