Measuring

I had a midwife appt at 32+3 and my fundal height was only 31? She didn't seem concerned or alarmed at all... I'm a FTM so obviously everything plays on my mind 😂 but is this within a "normal" range? Fundal height is a strange concept to me anyway, belly fat mixed with baby's position make it hard to believe that it's accurate...

Anyone have any previous babies that measured behind? I know I still have a bunch of weeks to catch up, but when I had the last scan at 22w I was measuring 49th percentile overall. Just worried bub isn't growing as they should be if we were on track 10 weeks ago... Anyone else?