A little worried (1st time mommy)

Alexandra • Jonathan born 7/30/15💙 two days over due date ☺️
Im currently 19wks today i went for a sonogram to see what was the gender and how much my baby has grown ☺️ but the doctor couldn't see all of the baby she said the baby was turned so she had turn on my side but still was having trouble and gave me an appointment to come back in 2weeks im worried thinking something is wrong has anyone experience this before ? She couldnt really tell the gender