Trouble finding out baby's gender early due to be overweight?

Delana

just wondering if anyone had trouble find out the baby's gender early at 15-16 weeks because of them being over weight? I was at the doctor yesterday and hot a ultrasound at 10 weeks and they had to do it transvaginal because they couldn't get the babies heart rate on my belly.. just wondering if they might have trouble finding the gender that early.