With DD2 I got weighed at my first appointment, and I only did urine tests at the end when my BP was sky rocketing and I had swelling, but heavily medicated with Nifedipine whoch is supposed to stop ctx and susequently lower BP.
DD1 I don't think we ever did it, and was only weighed once at the start, didn't even get weighed when I had polyhydromnious and was huge

I am really surprised how much everyone is having to pee and get weighed, I went through a private OB.