Alam ko ang confusing, lalo na with different EDDs at ang dating regarding baby's size at position, definitely worth asking your OB directly about all of this sa next visit mo, kasi siya lang ang makikita mo palagi at alam ang buong history mo! Para sa concerns mo about early labor at which EDD to follow: so yung first TVS based sa dating, second TVS gave a later date, pero ngayon at 36 weeks the baby's measuring smaller than expected, all of these things together need your OB's full assessment, hindi lang basta ultrasound result. The timing of delivery, whether baby's size is a concern, kung ang medication para sa growth ay kailangan, lahat yan medical decisions na talaga between you and your doctor lang. What I'd suggest: kung may tanong ka about labor signs or anything feels off before you see your OB again, don't hesitate to call the clinic or go in. Pero for the bigger picture stuff, the EDD question, the growth medication, the GDM management, that's all OB conversation. Hang in there, mie!