Accident Injury, what are my financial options?

I was a "good samaritan" helping during an overturned pickup on a california highway when another car lost control and slammed into me and the pickup. I was between the two vehicles when the car colided into the pickup. Miraculously I walked away with bruises, scrapes/cuts, and tight muscles. Roughly 2 weeks later my back started to hurt and found i had sciatic like symptoms. I've since gone to my primary care doctor and also Physical therapy (2wice a week) and will contintue PT until the issues work themselves out. I would say I'm in some pain at least 50-75% of my day and cannot do many of the recreational activies I was used to (Karate, golf, running, jumping, etc) without experiencing pain that stops me. Lastly, I cannot travel to India for my job where half my staff is as the plane ride is too long and I need to lay down to releive the pain I feel each day. The last part is not impacting me as much as my employer is supportive, but it still has me operating at some definciency. What should I do and what are my realistic options? The insurance company is calling to understand the details, and I don't want to have to go to court hearings over this but would like to recover my cost (probably sub$500 so far on PT/Medical copays) and some pain/suffering for my inability to enjoy recreational activies for the foreseable future.