Pap smear testing

Hey I'm curious about what a Pap smear is like? Like I planning on schedule to get on I'm 20 & I'm curious on what to expect on it even though I only had like two sexual partners and both used condom I want to make sure I'm good you know now that I'm sexually active kinda I just wanna know do they ask you about your sexually history when testing you for STDS? Like how does the process work? And how accurate STD test is? Do I get test & test again in 6 months just in case cause I had sex for the first time in Nov 2017 and my second in Dec 2017.

im kinda nervous about it lol i just wanna make sure I don't have nothing cause they both perform oral sex on me.