Hey, I think you can actually relax a bit here, measuring ahead doesn't automatically mean GDM trouble, and honestly, your history is quite reassuring. Both your earlier babies came out bigger and you delivered naturally both times, so your body clearly handles this well. Some mums carry more amniotic fluid or just make bigger babies naturally, and especially since your thyroid levels have been stable and you're managing your GDM through diet, that's actually a good sign you're on top of it.
The pelvic girdle pain is real and uncomfortable, but it's usually just about the extra weight and hormones loosening your ligaments, not necessarily linked to how much baby weighs. My neighbour had similar pain in her third pregnancy and it settled down once she got through that phase; a good pelvic physio or even just supportive pregnancy belt made a difference for her.
By 34 weeks your scan will give you a clearer picture anyway, and at that point your gynae can chat through whether anything needs adjusting for delivery. Given your track record and that you're managing GDM well, I'd say just keep doing what you're doing rather than worry too much. That said, definitely bring up the pelvic pain with your doctor at KKH, they should be able to give you some proper support, and a good gynae will take that seriously.
Anonymous