Short cervix 24 weeks

Sarah

Today I went in for a cervix measurement - I am just 24 weeks. The measurement was 2.7 cm. 3 weeks ago it was 3.8 cm. I go back next week for another check. I know that it can be worrisome once I'm 2.5 and under. I was wondering if others had similar experiences and if they made it full term? My goal is 10 more weeks, but of course I'd love to hold her longer. Thank you.