Measuring big

Ti

So today at my dr appointment he was shocked that how big my uterus is and is measuring way bigger then I’m supposed to. He is making me go get an ultrasound next Monday to check her fluids and to get a weight on her and if anything seems alarming he is going to talk to me about a scheduled c section😣 I’m 35 weeks but measuring 37-38 has this happened to anyone else? Also have to get the wonderful Group B strep test Monday as well 😣😳😭