Bump on cervix normal?

Sooo I’m not really even sure if it’s my cervix. I don’t know what all these names are. But I was checking for my IUD strings and not to be weird when I say this but I inserted my fingers as far as they would go and whatever my finger touched it felt like a bump. And I have never noticed it before.. I asked my husband if he’s ever noticed it 😅 but he has no idea. Should I be worried? Or is it normal?