Gender reveal and asked on my weight????

Hope

So with my first I did a early ultrasound to determine the weight. Well this go around baby #2 I wanted to do it again so I sign up and then they message me through Facebook after I book my appointment asking me my pant size before I was pregnant. Wtf?! I never got asked the first go around. Did they creep my pic and determine I’m probably over weight so let me ask?!