What should I do after being charged for false police statement to obtain CDS by fraud?

I was arrested at the hospital. I drove myself there after a hit and run accident. When I got to the hospital, they asked had I called the cops yet I said no. They took me right back because two weeks prior, I had slipped disk in my back. After the hit and run, it hurt in same spot all over again. When I come out of x-rays, the cops were out there and they proceeded to ask me what happened. I told them I was driving down rt4 in pouring rain. I couldn't see much. I could definitely tell it was a Chevy style truck that tapped me in the rear. I wasn't sure if I had hit person in front but they never stopped. The person who hit me in rear backed up some and made a right where there was no way possible for me to go that way. The cop said to hold on. His partners and he went outside and looked at car for maybe three minutes. Then he came back saying that I was never hit. He has it all on traffic camera so I asked what it was then. He had no answer except to tell me I’m lying. He then he pulls me out of my hospital bed, arrested me, took me down the hall a bit then went over to doctor. The doctor gave him my medical records without my consent. We go out to the police car, I asked what am I being charged with and he says false police statement for trying to get Klonopin 2mg by fraud which I have prescription for and trying to get Percocet by fraud. Now back to when I first got to the hospital, the doctors always ask how much pain am I in. I said about a 6-7 but I don’t take Percocet. I can only use muscle relaxer or something without opiate because at time of this I was taking Suboxone. Anyway, the cop was like "yeah I know you don't take them but you sell them. That’s why you have a PO box right?" I pretty much know where this was going a loose for me. I said no more and they told me no more. This happened on 05/01/2012. I don't hear about what’s going on.