I sustained a concussion while playing in a rugby match one month ago. I had no idea I was even injured--but apparently my head hit the ground during a tackle. I just got back up and continued to play. The next day, my head hurt--it was even painful just resting it on a pillow or touching it to shampoo my hair.

For the first two weeks afterward it was difficult for me to drive a car, walk around or do much of anything due to pain and dizziness. Things got better the third week. Now in the fourth week I still feel dizzy and just not entirely normal. I ran a few miles a couple of days ago and it made my head throb. The next day, it was a challenge for me to just walk in a straight line and I am still tired after getting 9 hours of sleep every night.

My CT scan results were normal, so how long will these symptoms last? I am going CRAZY not being able to exercise and I'm about to just say, screw it, and run anyway, even though I know my head will hurt afterward.