Measuring the same as 2 weeks ago

I had my 32 week appointment today and my doctor said I’m measuring the same exact measurement as my appointment 2 weeks ago. Up until now my baby has always measured exact. I also weigh the same as I did at my appointment 2 weeks ago. I haven’t changed my diet or eaten any less, if anything I feel like I’m always eating. My Dr. says I’ll need another ultrasound “at some point” but did not schedule one. He just said he will see me in two weeks. And now I sit here and worry for two weeks. Has this happened to anyone else? What would cause her to not grow for two weeks? Her heart rate was fine..