Pap test information

So I have been to the gyno once in my life,
I'm 20 and have not went back for my yearly because I have not changed partners, my method of birth control and am not trying to have kids. At my appointment I was told that in Ohio they don't do paps until your 21 now? Has anyone else been told that? Any any advice on yearly check ups? I got one when I was 18 and thought I'd wait until 21 to go again