39 weeks measuring smaller

Kristin • Daughter was born June 30, 2015 🎀
Went to doctor today, I'm still 1cm dilated and now I'm 50% effaced. Im 39+3 and fundal height is measuring 36cm..last week I was right on track..he didn't seem concerned and Monday I go back for ultrasound and non stress test. Has anyone else measured small this far along? Is it because she has dropped?