I had to have a pelvic (transabdominal) ultrasound done because of the pain I am currently having.  The person who was doing it asked me when my last period was and I told them that I was taking birth control pills to stop them and then she was done. She came back to the room and asked me if I was on any hormones...  I said no but I told her that the birth control pills do have progestin.  I am just curious to why I was asked this question... 

By the way I am not on T, I stopped it months ago so I actually didn't lie but I am just wondering why she asked this.
I am looking into things but does having pain in the pelvis area happen when taking hormones (T)?

(Noone questioned the fact that my ID has M and doctors referral's for the test had F along with insurance card's sex section being blank and that I was given a wrist band that had M but I still have anxiety if someone will mention something!)

She my have asked if you were on any hormones because your wristband said male, yet you have a uterus.  Typically people that have a uterus are female identified at birth.  If they have a male ID, it is usually because they are FTM and are on testosterone.  It may be that simple.

I know elevated testosterone in AFAB people can be a symptom of PCOS and other female-reproductive-stuff-issues, but AFAIK, elevated testosterone doesn't cause them. I've never heard of elevated female hormones actually causing pain, just being symptoms of other things that cause pain (like menstrual cramps).
I agree with Brett wrt: why she asked you.

Thank you for reassuring guys. I always get stressed out going to ANY doctor and stay on the defensive side if they were to ask me about my gender.