I had a similar experience. I went to work as a new grad at a large hospital and stuck it out for 5 months in a unit I did not like. It got to the point where I had this awful feeling every day before I went to work. I interviewed in-house for a few different positions, and then decided to switch to another facility.
However, it took awhile to get hired. I would call HR and get nowhere. Finally, I called the unit director for the position posted and asked if they would consider hiring a (virtual) new grad. This is how I got my current position - a MUCH better fit.
Keep looking. Something great is just around the corner