Is it standard to know baby’s weight ?

I see a lot of people saying their baby weight who are also due around when I’m due and I don’t know my baby’s weight. At my last appointment/ultrasound I was 26 weeks and they did a quick to check and see how baby is doing but they didn’t weigh my appointment before that was my anatomy scan which was at 24 weeks and they also didn’t weigh they did however do some measurements and checked her organs but not weight. I’ll definitely be asking my doctor next week at my appointment where I’ll be 30 weeks, just wanted to know in the meantime if it’s standard and when they start checking for weight ???