Curious: Other Pregnant women Carrying #3

I'm 17 weeks. #3 live in the U.S.

With my first pregnancy, I had SEVERAL u/s done due to high risk at 10w-16weeks. Baby boy born healthy and is 3yrs old today.

Then 2nd pregnancy, normal, I've had at least 2-3 u/s done, baby girl is healthy and now 7.5 months old.

I'm carrying #3 and I've only had a very early u/s (first time ever vaginal at 5 weeks) and then another at 9-10 weeks. I am 17 weeks today and have not had any more done! I am guessing, this is normal?

Are there other pregnant women in the same boat? Just wanted some reassurance and not lose my mind over something silly!