The waiting game sucks. I am dialated to 2cm and 34 weeks pregnant but I'm only carrying one. I'm not a medical expert but since your having twins I would GUESS and by guess I mean pretty much just a shot in the dark that you will probably deliver in the next 2-3 weeks. If i remember correctly they consider term for twins to be 37 weeks. So I think they are no longer considered preterm at 35. Good luck and congrats! P.s. how long have you been dialated to 3?