Wa'alaikumassalam! Sayang, kalau ada kekhawatiran tentang gula darah semasa mengandung, ni bukan main-main, please contact your doctor atau midwife cepat-cepat, okay? Especially since second pregnancy ni beda dari yang pertama. A few of my mum friends went through gestational concerns jugak, and the best thing was to get proper guidance from their healthcare team saja, they buat proper plan. Jangan worry, doctors ni deal with ni all the time. Get checked out, then you'll know exactly apa steps to take. Hang in there!