Hi Jyes!!!
If they didn't mention it on your report as an extra lumbar vertebrae, then it
could be that you are one set of ribs short in your thoracic area - instead of having an actual extra lumbar vertebrae.
This is the case with me, I have what appears to be 6 lumbar, however, I only have 5 and am missing the last set of ribs. It's a good thing too, because I'm short bodied and if I had that last set of ribs they would have been hitting against my hip bones.
Next time you see your doctor take your films with you... post a note on your film jacket (so you don't forget) and ask your doctor for his/her opinion.
What type of hip pain/pelvic pain are you having?
Blessings,
Kathe