Rear-ended by uninsured motorist, car damage and injuries

An uninsured driver rear ended me a little over a week ago. I contacted my insurance and they estimated $3000 damage to my car, it has been in the shop for about a week now. I've been having back, neck, shoulder and arm pain since the accident, and it hasn't improved. I went to the ER, saw my own dr four days after the accident and saw an orthopedic dr last week. I am on pain meds, muscle relaxer and anti-inflammatory, and I am supposed to start physical therapy next week. I have called my insurance many times but have not gotten a clear explanation of how this is going to be paid for. Should I have my doctors bill my health insurance or auto? I know I have $1000 in Med Pay, but does that amount go directly to the providers, or to me?

My main problem is that I can't afford all the copays for the dr visits and PT, along with my deductible and the cost of the rental car while mine is in the shop. I am self employed and have not been able to work much at all due to my injuries. Does my Uninsured Motorist coverage help with lost wages at all? Can I get the $1000 Med Pay now, since I've already gone over that amount in bills, or is it done when I'm completely done with treatment? Thank you for any advice.