How do I pay for my medical expenses before I settle?

I was in a bicycle accident about two months ago. I was riding my bike and some joker plowed right into me. The accident was 100% his fault. I sustained a hairline fracture of my left arm. The other guy's insurance company is pressuring me settle, but I don't want to yet because the bills are still coming in and I won't know the final cost until I receive all the bills. Also I have a pain in my knee since the accident that still won't go away. So I still need to seek medical advice on that too. In the meantime, how do I pay these enormous medical bills that keep coming in. I do have some savings, but it's quickly starting to run out. So how do I pay for this when my savings run dry (if that happens)? Do I take out a loan to pay for it? Do I just pay with a credit card and just pay the minimum each month and expect the insurance company to pay all of the interest charges? I really am in a bind here. Any information you guys could give me would be very much appreciated. Thank You