Feel like belly/baby isn’t growing?

I have always been able to see a difference in my belly size every few weeks, however I am 34 weeks pregnant now and I haven’t noticed a difference in my belly size in the last three weeks or so. Baby doesn’t feel any heavier and my belly hasn’t grown at all, and I haven’t gained any weight in the past three weeks either. I have a growth scan at 36 weeks but I’m scared baby has stopped growing and that 36 weeks is too far away. I have a general appt on Monday (two days from now), last time I mentioned sort of the same thing and they brushed it off, how do I make them listen this time? I wouldn’t care or mind if my stomach was just smaller than most others, but it’s smaller and not changing. Or am I overthinking it? I just hear about everyone struggling to bend over and feeling super tight and super big and I’m not getting that at all. I don’t know, just looking for advice or wisdom. Thank you!