anyone know anything about HPV?

So a guy I had sex with two years ago messaged me saying a girl he had sex with has HPV. And if I have it.. I have never gotten a Pap smear so I don't know and I'm freaking out. I just had a baby and they didn't do one, I'll be getting one done soon but if I had HPV would the doctor notice something different in my vagina or can they just tell through a Pap smear.
Please help I'm freaking out. 
If I have HPV does my son have it too?? I had him in February 2017

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