I need someone go help me with something serious! It involves doing a self examination lol . I don’t have insurance so I don’t want to go to the doctor unless I have to ...

So one time I got a tampon stuck in me . And so I was scared I had one stuck in again so I was self examining my vagina and to the far back on the left side there’s something kind of hard there like a ball kind of. Can anyone else see if it’s something we all have ??? I’m freaking out here .