I messed up my car

Yesterday I had gotten into a car crash.  I was coming back from the store and was parking in the shade.  I was going to wash the windows but I figured wait until the sun comes down.  I reversed slightly and as I was back up to the position where I normally park, my foot slipped and hit the accelerator.  My neighbor's car was behind me and I couldn't be able to stop the car quickly, but I hit her car with a loud crash.

I ran out of the car making my way to the neighbor's apartment upstairs, watching her car roll onto the front lawn. I was in complete shock and disappointed with myself.  She was trying to calm me down but I was too shook up.  She was understanding that accidents happen and to look at what happened.  I was lucky that she wasn't in the car or hit any other cars.

I then had to break the news to Craig that I messed up the car.  He wasn't happy with it and immediately called 911 and the insurance company.

When the cop came to the house, I explained what happened.  He asked if I was in any car crashes, DUI, or anything like that.  I said no.  He ended up giving me a warning.  Hours later I then realized that I was in a car crash before back in 2005.  Craig told me that I need to calm down and that I will not get arrested. 

Our neighbor was nice enough to ask her uncle to use his vehicle to get to the Enterprise to get rented vehicles.  When I saw the rented vehicle that I was going to be driving, I kept getting flashbacks of the accident.  I fear of getting into another crash.  Turned out this vehicle was sensitive to the accelerator. I didn't really need to push down as much.  During the whole time back to the house, I was completely tense.

When I was driving home, Craig suggested I should go to ER just to make sure there wasn't anything wrong with my back or anything.  So that's what they did and took Xrays and didn't find anything, however, they did find a little bit of arthritis in the lower back.

I still feel strange and not myself.  I fear of getting arrested, what will happen to me, getting these flashbacks whenever I go behind a wheel.  I don't feel safe.