Did they mention how short? I think anything under 2 they would have you go on bedrest, anything less can cause preterm labor, or risk for a rescue cerclage or infection if you dialate to much before 36+ weeks.
I had a shortened cervix they didn't catch my first pregnancy, and per my siggy it didn't end well.
Second pregnancy, I had to be induced.. as he would come out,
this pregancy cervix measured today and still at 5, long and closed.