3D Ultrasound

We have this place near my home that does 2D/4D ultrasound anytime after 15 weeks for gender determination. I’ll be 15 weeks on Friday and we are discussing going this weekend - but I’ve been googling the 15 week 3D/4d ultrasound pictures and my husband was weirded out because obviously they don’t look like what you picture a baby looking like (yet) haha. Did anyone do this early and find it weird? Did anyone do this at 15 weeks then have the gender end up being wrong? It says 99% accurate at this point but I’m still nervous about that too.