Anyone else just have a "normal" 2.5 cm cervix in multiple pregnancies?

So at my 20 week sono yesterday, they found that my cervix was measuring 23 mm. This happened with my DS exactly 2 years ago. I have a slight funnel that seemed to open and close depending on the angle of the sono tech's hand. I'm not as nervous since I went 39 weeks with DS and had a normal L & D, but still worried b/c I can't take it as easy as I did with my first pregnancy. Ugh...just frustrated. Chat Icon