My Dr. Told me it is usually 65% accurate. My friend was told her baby was a girl several times then the baby came out a boy. Same thing happend to my aunt
Its pretty accurate the only way 100% is wait til birth but i was told at 19weeks a boy and im now 32weeks and his still a boy :)
I was told at 18 weeks it was a girl and yup she's a girl lol
Very verry accurate when they hav a clear shot of the area ..technolgy is highly advanced and the 3d -4d options in ultrasound makes it so clear theres no mistake .