If there are no other complications then at 38 weeks. With both my other pregnancies my cervix ripened well and I was 2cm dilated one or two weeks before. I've been having regular scans because of the GD and the last one showed he was about three weeks ahead in size but tummy size was good.

My second son was ahead of dates according to U/S and he was 9lb 10oz so the chances of this baby being big is pretty high. The main argument is the fact that the placenta breaks down and this can happen faster due to the GD. When I asked what tests they do to check this the OB said they didn't have one but she'd seen enough GD placentas in her time. She's quite good and always willing to discuss things. I do like the fact she's not going to give me the drip straight away to move things along.

I'm sure hubby will be only to happy to help ripen the cervix!