8wk Ultrasound and question...

I went in for my 8wk ultrasound yesterday and was very nervous (see previous post) but everything looked and went well! The tech even called my little one fat😂(a bigger fetus I guess) Anyway Glow as well as a couple other of my pregnancy apps tell me I’m about 8w3d based on my last menstrual cycle, but something on the tech’s screen I remember said 8w6d. She told me I was 8w “and some change”. I’m just curious as to what y’all think? Here’s baby👇🏼❤️Any gender guesses as well? BTW, the baby was on its head in the original ultrasound, she flipped the first picture upside down so we could see what it would be like if lil one was right side up😂👶🏽