Getting baby measurements?

La

So I've been seeing a lot of posts about women getting their babies measured in the 3rd trimester for weight, head circumference, etc. My doctor hasn't done any of those! Is this weird?? I've only had 2 scans, one at almost 8 weeks and one at 19 weeks. I did get the genetic testing done at 10 weeks as well, all normal. At my 2 week check ups my doctor measures my belly and feels the baby through my belly and kind of guesses his weight... anyone else's doctor like this?