It DOES get better! My first few months as a nurse I was constantly second guessing myself, worrying that I might have missed something, ect. I was frustrated and constantly wondering why I went to school for THIS. But honestly, after the first year, it does get better. Sure, there are rough days, and there's unsafe places to work out there, but when you find the right place, doing whatever kind of nursing is best to you, it all comes together.
Get out and look to see what else is available. It doesn't hurt to check into other facilities, even if it's something you never thought you would want to do. I swore I'd never work LTC, and guess where I am? LTC LOL! And I love it.