Aiyoh mak, 31 weeks dah tuuuu, memang ramai moms rasa sakit pinggang terok at this stage, you're not alone lah! Hormones and the weight of baby dah pressure kat lower back and pelvis, memang difficult to move around. A few of my mum friends said they tried sleeping with a pregnancy pillow between the knees, and pastu gently roll to one side dulu before bangun, helps jugak the pressure. But honestly sayang, if it's really affecting your daily life and sleep, better check with your doctor or midwife cepat-cepat, sebab sometimes they can refer you to physio or suggest prenatal massage yang safe untuk pregnant mums. Jangan tahan-tahan je, mummy's comfort matters too!