Do you trust 13 week gender prediction ultrasound

Brooke

I had my 13w3d ultrasound and my doctore believes for it to be looking like a boy! but even then he was like "you are only 13 weeks" and so in a month we will double check. everywhere I see by other people's post you can tell the gender but lots of <a href="https://play.google.com/store/apps/details?id=com.glow.android.baby">baby apps</a> (including this one) says you cant know because it all still looks the same. Thoughs? btw ill attach my "probably boy" pic