Baby measurements at 28 weeks

Sophie
So my girl is measuring pretty much perfect for 28 weeks...except her legs, which are measuring a bit over 30.  She's head down so she's having tons of fun kicking the crap out of my ribs.  I think it's kind of funny, but I have a feeling it'll get very annoying and uncomfortable in a matter of weeks as she grows more.  Anyone have any experience with this in later pregnancy?