Sayang, dengar sini, sakit bawah perut cam tu, terutama kalau intermittent (sekejap je), boleh jadi signs of early labour, tapi boleh juga braxton hicks atau just normal pregnancy aches dekat final weeks nie. Sebab you're already 39 weeks 4 days dan ada history of GDM, please jangan tunda, go to your hospital or labour ward skang jugak, jangan tunggu. Doktor perlu check betul-betul, especially dengan fluid loss tu tadi. One of my mum friends went through similar, rasa sakit on-off cam tu, turned out she was actually in early labour stage. Better safe than sorry, kan, they'll monitor you properly kat hospital. Don't worry, you're at term sudah, so baby boleh datang anytime and it's safe. Go now, okay? Update us later!