Confused about checkups

Lauren
Hi mamas- I'm currently 26.5 weeks and I'm confused. I've seen a lot of people posting about the current weight of their baby and their percentile and such. How is this measured? What are other mamas checkups like? At my checkups they just do heart rate and measure my belly with a tape measure. Also she said I prob wouldn't be getting another ultra sound. My last one was my 20 week scan.