Girl I'm in the same boat I go back on the 20 to know for sure my doc said its a boy I got home looked at the picture it was no thing thing he told me when I was 13 weeks I told myself it was to early to tell
Idk about yours but my ultrasound with my first I could see the cord and boy parts separately, this pregnancy I paid for an extra ultrasound to find out the gender a month early and you could tell the difference I think you will be ok