They might have a reason to not do one at thus point. But I got mine done at 15 weeks my cervix was still conpmetly closed and long. We had it don't to prevent or try and prevent anthing like that happening since my last pregnancy I lost my baby at 20 weeks. So far its been good. Maybe you should ask then the reason they don't want to do it yet? Ask for an explination.
Update: im on complete bed rest dialted to a 2 and weekly apts. Urgh. I am not effacing so they dont want to do a cerclage yet. wtf? i thought they should do one.. should I insist???
i guess its best u consult a doctor ASAP...
I would go to the ER that way the can check and see what's going on. But complete bedrest and lots of fluids will probably be on the agenda from this point. I'm sorry you are going through this and will say a praying for you and your baby. I'm high risk as well and know how scary it is. Praying for you. Please keep us posted.
I would go to the er an they should do an ultrasound to see what's going on