I was measuring a few weeks behind in the third tri. In fact, from 28 weeks to 34 weeks, I apparently was measuring 28 weeks the entire time (implying that bub wasn't growing!) As you can imagine I was very worried but at 34 weeks I had a different midwife who told me it was nothing to worry about and it could simply mean bub was in a position that made measurment inaccurate. She took his "measurements" and said he was a couple of weeks behind but was growing fine. He was born at 38 weeks weighing 2854g, so yeah on the smallish size, but then again I was smaller than that at birth so it could just be genetic (although DP was a boof at birth so who knows!)

All the best and you may be suprised at your bub's size when she's born