Baby’s so smushed!!

I went for the 3D ultrasound at 29 and a half weeks, they say to go before 34 since the baby’s running out of room. I feel like I should of went maybe at 26-27 weeks? I could barely get any good photos of him since he was so pressed up against the uterine wall and the placenta... I feel like he has no room in there and now I’m worried lol