Small bump and baby been fine

I’m 27 weeks pregnant and no baby bump! I can feel her move but everyone keeps commenting how tiny my bump is 😫 my consultant is scanning me every 2 weeks from 28 weeks to make sure she’s ok ... she is messuring 5 days behind and I’m just so worried ... anyone had a small bump and baby been ok? My first girl was delivered at 38 weeks and was only 5lb ‘ but I was bigger at this stage with her ?