Is my work supposed to be a calling or just a paycheck?

That nagging question is worth listening to, not silencing. You are asking whether your work is supposed to mean something or just pay the bills, and the fact that it will not leave you alone suggests some part of you wants more than a paycheck. That is not restlessness to be ashamed of. It is a real question about how you spend your one life. Here is a freeing truth: work does not have to be a calling to be worthy. A job that pays for a good life outside of it is an honorable thing, and not everyone's deepest meaning comes from their work. The trap is believing you are failing if your job is just a job. You are not. Meaning can live in what the paycheck makes possible, not only in the work itself. Ask yourself one plain question: is this work a means or a meaning for me, and am I at peace with the answer? If the paycheck funds a life you love, that may be enough. If the emptiness stays, that is information too. Let the honest answer, not the pressure to have a calling, guide what you do next.