Back and Neck Injury - Auto Accident?

I impacted another vehicle at 40 MPH sending me into oncoming traffic where I hit a second vehicle at about 25. I woke up the next day with severe neck and back pain. I have been to physical therapy and have appointments twice a week scheduled for the next month. At that point I plan to evaluate the progress in therapy. I have hired an attorney for consultation in a settlement. Am I doing the right thing and what should I be expecting in the coming months??