Concerned

Yesterday I went to my normal 16 week appointment with my obgyn where they check your weight blood pressure and the baby’s heart beat and the nurse was having trouble finding the heartbeat so she brought in another nurse to help and she couldn’t find it either so my ob had to try and she did not find it. It’s the second apointment I have where it’s very difficult to find the baby’s heart. So the doctor ordered an ultrasound to see if everything was going good. And they found the heart beat right away and she was very active but for some reason it’s difficult to find her heart beat in the fetal Doppler. The fetal Doppler picks up her movements but not her heartbeat.

Has that ever happen to anyone else or it’s just me.