I was diagnosed with this same thing in 201. i had an early birth at 15 weeks, and it was nearly as curae being siagnosed this. in 2005 i got my first cerclage. it got mysteriously infected. so bad the amniotic fluid had less than desirable colors floating in it. needless to say early birth. immature grown deceased. pregnancy in 2006. cerclage with antibiotics. erly birth deceased. in 2012 i did nothing no cerclage just plenty of bedrest. success. i am pregnant again, and i am doing the same thing.