Has anyone started thinning early and when did you deliver?

Brantly
Im pregnant with twins girls I had my cervix measured at the beginning of my pregnancy at maybe 5 weeks and it was 4.3 cm but when I went for an anatomy scan at 21 weeks it was 3.1 then at my next anatomy scan at 25 weeks 4 days it was 2.5-2.8 so I had it remessured at 26 weeks 4 days and it's now 2.1-2.2. My doctor didn't say much about just to come back in two weeks to check again. He normally doesn't say anything until he knows for sure so I don't worry but I googled it and now I'm freaking out!!! 😫😫 so have any of you ladies had thinning this early and what was the outcome???