You're worth what you can convince someone to pay you. If you think you can earn more, start interviewing and see what the market says. Stay at your current job

You're worth what you can convince someone to pay you. If you think you can earn more, start interviewing and see what the market says. Stay at your current job in the meantime. Once you get some offers, you'll be able to make an informed decision as to whether you're leaving money on the table by staying.