Feel free to skim through and comment on any aspect. The reasoning for posting this is to conversate with people knowledgeable on this and to learn.

Intro:
Hello, I am 20 years old and I was in a car accident October 23rd 2014. The first 2 weeks after getting out of the hospital I seemed to be getting better every day and thought within a week I would be back to normal. My neurologist told me I had PCS and ordered an MRI and an EEG. The MRI revealed I had a pineal cyst and an area of Increased t2 and flair in the frontal left region. The EEG didn't reveal anything. My girlfriend had left me one day prior to getting my test and the way my neurologist told me about the results was “here's how you spell it so you can google it” From that day on everything has been going downhill with a mix of depression, stress and scare.

Symptoms/changes:

Memory loss
Unable to think of simple words sometimes
Foggy
Dreams feel as if they are real, sometimes persisting for several moments after I wake up.
The littlest things make me very angry and I lash out uncontrollably.
Every day seems like a replay of the last
Loss of enjoyment in things I use to love to do.
Unable to concentrate on more than one thing.


Random Information:

Since it is winter right now most of the days are very dark, So far any day that has been sunny out I seem to get a ton of energy and feel as close to normal as I have since the injury.
I spent most of my days trapped in my mind for hours unable to break out of it until late in the day. When I am not thinking about negative things I seem to have more motivation to get my life going on a positive track and Improving on myself and my future, The only problem is with the extreme personality changes throughout the day I can never keep that mindset or act on it with the way I am right now.
I am able to force myself out anytime there is something happening and I have fun and interact with people well, but the next day it feels as if what I did was just a movie I watched, it doesn’t feel like I did it. Most of the days by the time I’m ready to go to sleep I can get my mind into a positive place, but when I wake up the next day it’s back to basically replaying the same difficulties I had before and replaying the same day every day.
I have done Brazilian Jiu Jitsu for 2 years. It was a sunny day, I had a lot of energy and felt good and decided to give it a shot a month and a half into the injury. It was hard for me to learn new techniques and being there gave me anxiety, but when it came time to spar I had no anxiety and it seemed as if I did better than I would have prior to the injury. I have not gone back since then because I don’t feel as if I’m ready.
I’m not sure how I feel about getting on medications because I was on medication for 12 years of my life for anxiety and I did not like how it made me feel, Have anyone had success with medication?