Pap smear

I'm very nervous & anxious about getting a Pap smear. I know us ladies need to get one-once they become sexually active or turn 21. It's going to be my 1st time getting one. I'm 21 but I lost my virginity a year & a half ago. & I've noticed some bumps down there. They don't hurt or cause any irritation/itchiness. I'm very worried it could be an STD. I need some encouraging words