It's surely a new feeling for you, but also a good one. What might also be adding to the strangeness is that if you're not anxious, what are you supposed to feel? It's like a challenge that now you have to figure out what will take the place of that formerly ever-present anxiety. It may take a bit of experimenting before finding the "new normal" state. Until that happens, you may feel good, but also a bit lost. It's ok.