whiplash injury

hi in the last november I was involve in the car accident I was a passanger the car was going down the hill on a wet road. The car collided with a tree the impact came from the rear. On the medical report it states that I had a soft tissue, whiplash injury affecting the neck. I also suffer for a left shoulder pain and lower back pain will resolve in the next 9 months. As a passanger I suffer for a psychological stress and travel anxiety for 6 months I was on painkillers and had horrible headaches. The insurance company contacted me and gave a session of physioterapy. The treatment was affective. After 3 months after the accident happen they offer me Â?2.100 based on my medical report. Could anyone advise me this sound a right compensation?