Eh, normal je actually, hormones tu memang boleh buat perut jadi loose especially dalam third trimester, apalagi kalau ada GDM kena control diet macam-macam But since lepas makan je cirit, better check with your doctor just to make sure it's not something else (like infection or adjustment to medication), sebab some of my mum friends yang ada GDM kena monitor closely. Weight-wise, don't worry if steady je, at 30 weeks berat gain slower is actually okay, yang penting baby growth normal on scan!