Concerned ….

My due date was bumped up. Went from March 31 to March 29 as I’m reading. Everything looked well but the stomach wasn’t visualized. An prior to reading my results, I had just read in another group of a poor Mother experiencing the same thing. An my heart was breaking for her.. I reached out to my midwife, no response yet. Also went ahead an requested an appointment with a Diagnostic center that specializes in ultrasounds to get a second opinion. Not wait till 20weeks for another one. An I went back through medical history with all of my other three an this was never reported before. Anyone have past experiences with this?