I think it is your turn for smooth sailing, so fingers crossed.
I am so old. Even though ultrasounds were common with my first two boys, I didn't have them because my doctor didn't think they were medically necessary. I had a miscarriage at 10 weeks on my third pregnancy, which he then decided made them medically necessary from then on out, although never found out the gender. At some point, you just assume it's a boy.
Ultrasounds were only used when there was concern when I was having my boys.
I had to go 90 miles with a full bladder in the fourth month for an ultrasound for the first because they thought I might be having twins (I kind of exploded outward between 3 & 4 months) but nope...just one, growing fast.
When I did the same thing in my second pregnancy and they suggested another trip to Spokane, I passed.
A friend had one done around the same time, and the technician told her she was having a boy, then jokingly added "or a deformed girl". She worried for the rest of her pregnancy, and when she gave birth and the OB said it was a girl, her husband says she got absolutely hysterical in the delivery room. The OB thought there was some normal hormonal swelling that the tech interpreted as a penis...no deformity.
The technology has improved vastly since then, but it still amazed me when my daughters & DIL's were getting them practically every six weeks...