Feeling Stressed about Fundal Height Measuring Behind

I went in for my 34 week appointment today and my fundal height was 30 cm. Basically the same as it was 2 weeks ago too. I had a growth scan at 32 weeks because of measuring behind and he was measuring around 49% overall so doing okay.

They scheduled another growth scan at my 36 week appointment just since I'm measuring behind.

Anyone else experience this? What was the outcome?

Can't help but feel worried that something is wrong, but they didn't seem overly concerned.