Waiting to find out the gender

I waiting to find out the sex of my baby when I went to the doctor at 11 weeks I was told by my tech that I can find out the sex when I come back when I'm 16 weeks but my doctor said there is no need to see the tech just come see me I was sad but I said okay so when I went back when I was 16 weeks my doctor said okay when you come back in 4 weeks you will be 20 weeks and you tech will be looking at the anatomy of the baby and tell you the sex that will be on July 8th.....BUT THE WAIT IS DRIVING ME NUTS ...sorry just venting