First off, I would like to say thank you in advance for taking the time to read my thread. Your forums here are a great resource. I will do my best to explain thoroughly my situation to help you guys get the best understanding for feedback. (Keep in mind I am going to my neurologist this Thursday....)

Okay, so my story begins January 5th, 2012:
I was playing a game of basketball w/ friends at my local YMCA when all of a sudden I collided with one of my friends in a head-to-head hit. It hurt VERY badly for only at matter of seconds (I was NOT knocked out) so I was able to continue playing for the remainder of the night with no pain/other effects. My friend was in enough pain so that he went home and took aspirin and had no prolonged effects. I have since asked other friends who observed the incident and asked them how hard it looked to which one responded :
"It was pretty f'ing hard."

January 8th:
Only symptoms were small tick/pinch-like feelings before I went to bed that night.

January 9th:
Looking back, here is where I was really foolish. I went snowboarding with a pal and took a couple of spills (and YES, I WASN'T wearing a helmet). However, I do not recall hitting my head directly but I do remember landing oddly with my neck bent forward.

January 10th:
This was the day I felt "not right". The best terms I can use to describe would be: tired, out of place, disinterested.

January 11th-January 25th:
Symptoms Persist/Worsen. Develop headaches (not specific to any part of head and are either very quick "flares" or longer/dull). Also, I started to feel like my eyes lost their ability to blink and that I had to do it manually.

January 25th (Important):
Visit usual physician, explain symptoms, etc... I TELL HIM I WOULD DESCRIBE MYSELF AS A HYPOCHONDRIAC/ANXIOUS PERSON. I tell him from mid-Nov to present that I was under a lot of stress at home (mom sick, dog being put down soon). He does routine neuro exam (eyes/ears): he says no bleeding in skull and no pressure in skull...

January 25th (CONTINUED):
I explain to him why I think I am anxious... This previous summer I was vacationing with a friend at his family's house in FL and he pointed to a picture of his cousin. My friend tells me she just had a BRAIN TUMOR...Fast forward to me in my doctor's office and I tell him that. He calms me down and tells me rest is the only solution.

January 26-January 30th:
Symptoms persist, anxiousness builds. Begin to feel random quick pains/twiches in body parts and an urge to move my legs because they feel "different".

January 31st-Febuary 1st:
I presume I had a panic attack this morning. Woke up with trembles, mind racing, contemplate calling 911.

February 1st:
Return to physician, he repeats neuro exam: again no pressure in skull or internal bleeding. We discuss my anxiety and set up a meeting with a psychiatrist.

February 3rd:
Appointment with psychiatrist, I explain all the details, etc, etc. She concludes that I have always been an anxious person(true) and that the stress and concussion(presumed) have made my anxiousness worse. She prescribes Xanax(.25mg twice a day).

February 4th-Present:
Overall quality of life is better I guess due to Xanax but still the thought of a BRAIN TUMOR is still on my mind. As said previously, going to neurologist this Thursday (2/16).

Current Symptoms (In Detail):
-Headaches: I never have any serious pounding/pulsating pain in any reoccurring/specific area but rather usually quick sensations in any part of the head. Sometimes I experience dull tightness in the back of my head.
-Legs: I think this is an anxiety issue, but I seem to have an increased alertness to them from my knees and below. I feel like I have to move them.
-Neck: I get neck pain in when I lean it backwards. This seems to come and go.
-Eyes: This symptom is an on/off thing. Sometimes I go a while without experiencing it. The best way to describe it is like I have to force myself to blink a lot on my own.

Other Important Information:
-I went snowboarding before my basketball incident (Dec 22 and Dec 29), again WITHOUT helmet and falling a lot, but didn't have any concerns in the days after.
-As briefly mentioned, I've been under a lot of stress since mid Nov with Mom's health (driving the house crazy, so far nothing found with her). I guess I get my hypochondriac mindset from her...

MY THOUGHT PROCESS WITH THIS ANXIETY
Regarding my story about my friend's cousin with the BRAIN TUMOR...I have been vigorously searching my mind/asking friends/recounting dates on facebook to PROVE TO MYSELF that I was NOT experiencing any of these symptoms (headaches,etc) prior to the dates that I have given. I keep coming back to the answer that it's unlikely a tumor developed between late December (when I was feeling fine) and being hit in the head but I keep doubting myself and even the severity of my concussion. Everyone I've spoken with says that I am highly over-analyzing the situation.

I've read on some sites that the occurrence Post Concussion Syndrome has little correlation with the severity of the concussion sustained. Can anyone confirm this and does it sound likely that I'm having PCS?

So, well, there is my story. Thank You so VERY MUCH for taking the time to read it. Please help me out with my thought process and if this all sounds normal in regards to the symptoms.