The first one was on the belly. Simple. Enjoyed seeing little bean wiggle and move around all crazy ((kid can move omg!))

Then the tech started the transvaginal. Again lots of movement from baby bean just could see a lot clearer..then I noticed it.  The thing sticking out   The nub in between the legs.  I thought to myself..and then out loud I looked at the tech and said "is that?" She looked confused and went back over to it..she said "its crazy but I'm almost positive, that's a boy"   I'm telling you ladies. I know it seems early but this is my third baby....i know the "battle of the bulge" I know "ramzi" I know the wives tales. But I'm telling you I'm almost 99.8% positive I just saw a little wiener lol. It was as clear as day..Like I've seen many ultrasounds (my own and friends) and I'm telling y'all I saw it. The tech saw it and she looked several times to make sure we both weren't crazy lol..

Had his happened to anyone else early on? 

I fee like it would be more common for already moms..not saying it wouldn't happen for firsts..just know sometimes gender can be hard to spot. :)