What do y'all think?

So I had an appointment today with my OB. They did my weight and I am at 195. Starting out in this pregnancy I was 191, and I am currently 33 weeks along. I'm only 5'5", so I was already considered obese to begin with. She wants me to go for an ultrasound to make sure baby is growing since I've only gained 4 pounds so far. (Which when she measured my belly, it was showing right on track with me being 33 weeks). I was so proud of myself, and then she hit me with that so now I'm worried. I can tell she's growing because I have to push her down from my ribs or out of my side, and she is SO strong. Should I be concerned? My ultrasound isn't until May 14th because they are so backed up and understaffed.