Ultrasound..

Anyone get ultrasound in around 29 weeks where they had to go down on your pelvic area like close to the lips of the vagina to see baby’s head and face? I just had mine at 28 weeks 6 days and they had to go down this far to get baby’s head and bit down further to get the top of his head. Is this normal? I know baby is in the pelvic area but that seems very low. Is this normal?

Picture to kinda show where I’m taking back