So sorry to hear news like this - and, as a cyclist who was hit & injured last year, I fully agree with the 'get and attorney' advice. I contacted some cycling friends after I was hit, was referred to a local attorney who has lots of experience in representing cyclists, is a bike commuter himself and sponsors several area teams and charity events.
You should be able to have a free consultation and be sure to take lots of pictures: of your bike damages, of the collision scene (I prefer to use the word "collision" rather than accident, as it seems more apt to me; even though I know it's not usually an intentional injury). If you have any torn, bloody clothing, or injuries...it's best to document all and photographical evidence is a huge help if you're wanting to recover $ for property damages and/or personal injury. If you bring your bike to a bike shop, they should know how to document not only that it was brand new but any damages done, what needs to be replaced, is it a total loss, etc? If it's deemed a total loss, then the law provides for you to get current market value - not replacement value. Since you were out on your new bike for the first time, yours sounds like it should be replacement value, but again, you'll need help in documenting this, so that the driver's insurance company can't low-ball you...
Throughout it all - take care of yourself as there are not only the physical injuries but the emotional ones to heal from too (your references to having some 'anxiety about cycling' indicate that you're aware of and not ignoring these impacts; good job!).
Mary