How soon can the gender be seen

F

Hi everyone ,

I was wondering the earliest you found out the gender of your baby ? I have an 8 year old and didn’t find out what I was having until I was 6 months . So I’m on my second baby and when I went into my 12 week ultrasound they said they can schedule an appointment to see the gender at 15 weeks so I will be going in the end of the month which I’ll be 15 weeks and a few days . Just wondering is that too soon ? Will they make a mistake if I go that early ?