Maybe your baby hides behind your bladder Wobs lol
Yesterday my bladder wasn't full and i found it fine, so maybe it was more about me being laid down for a while and doing it before I had stood up. I assume at the moment with the baby being so small compared to my uterus, it naturally sits lower in my pelvis when I've been standing.
Do you find it easier to find as your and the baby are getting bigger?