Do I need to hire an attorney, or is this a case where I should settle it on own? What type of range of compensation am I looking at?

I was involved in a car accident in June of this year. The other driver failed to yield turning left on a green light and slammed into the drivers side of my vehicle. The hit completely spun my car around and cause $4000 worth of damage. The day following the accident I woke up in a lot of pain in my neck and back. I started seeing an orthopedic doctor and was first diagnosed with a neck and back sprain. My neck pain eventually got better, but my back pain got worse. Two mohths later, the doctor ordered an MRI and found that I have a small central disc profusion at L5-S1 with annular tear , resulting in mild narrowing of the central canal. I have taken two rounds of steroids, and continue to take anti-inflammatory medication, along with physical therapy. The other driver did take full responsibility of the accident, and the adjuster from the driver's insurance has been in frequent contact with me. As of right now, total medical costs are at $7000