Couldn't find a heart beat...

I went to the doctors yesterday to hear my little ones heart and I got nervous & terrified. My CMW couldn't find it.. she did a pap & asked me questions & ordered my genetic test. She had me go an ultrasound room to see what was going with my little one.. apparently my child is already shy like mommy Haha the baby was perfectly healthy just hiding.. next ultrasound in 9 weeks also going be when we find out the gender!! Ladies has anything like this happened to you?