Midwife measured smaller bump

Hey

Wondering if anyone can help me, I went for a growth scan 2 weeks ago (27w) and baby was measuring a lovely 2lbs3, so she was in the 46th percentile.

I went to see my midwife last week (28w) and she told me my bump was measuring at 26cm where really it should be 28cm. So is sending me for a growth scan which is this week (29w)

I’ve been fine up until this point but now I’m worrying. Midwife told me not worry, she thinks I measured small because baby was breech and I am small (5ft 2)

Anyone else measuring smaller around 27- 29 weeks?