Baby dropped percentiles?

Rebecca • Wife💍 Harrisons mommy 🥰 TTC baby #2

Hey ladies, i just had a growth scan today at 28 weeks. The tech took a very long time on the cord, looking and listening to the blood flow. I also noticed on the chart it showed 28th percentile. When i had my ultrasound done at 23 weeks he was in the 68th percentile. My doctor has not called me yet but i am so worried. Anyone else go through this?