I was a late bloomer, so I didn't really have pubic hair until my exam just after my sixteenth birthday.
I think I probably was less nervous than in the previous few years' exams, when I was lagging behind in development, and my pediatrician and my mom kept talking about treatment options.
My exam at 16 was just like all of my other exams, where I was treated like a little boy in the pediatrician's office. (In fairness, I totally looked the part, still a bit chubby and with a baby face.) The nurse told my mom to have me take off everything except my underpants, after which the nurse walked me down the hall for height and weight before returning me to the exam room to wait with my mom for the doctor.
All through the exam, the doctor kept talking to my mom about me in the third person, and rarely addressed me directly. But when he got to the usual point in the exam where he pulled down my underpants, instead of the disappointment I was used to seeing in his face and my mom's face, this time they both smiled at seeing my pubic hair, and he said I was finally caught up with the other boys.
The doctor immediately changed his behavior and instead of talking to my mom about me, he talked to me directly. Where in previous years at this point he would ask my mom if I was having nocturnal emissions, he asked me directly about masturbation and ejaculation, and I was a little embarrassed (but also a little proud due to having been so far behind), to tell him I had started ejaculating a few months before.
With the doctor and my mom finally satisfied that my sexual functions were fine, that was the last visit I had with the pediatrician, instead seeing a GP thereafter without having my mom in the exam room.