X ray for lumbar spine and sacroiliac joints? (Arthritis/fibromyalgia)

[Mochawhite]

Hello
Looking for a bit of advice on anyone who’s had a spine X-ray?

What’s the sort of procedure? Will I be undressed?

My dr is looking for signs of arthritis (I’m 26)

You will get undressed in private and put a hospital gown on. You won’t be naked.