Uy, 31 weeks ang struggle talaga! A few of us sa mommy group namin, we've been swearing by side-sleeping with a pregnancy pillow, it really helps kasi ang bigat ng belly isn't pressing on your back, and some friends said elevating their legs with extra pillows helped din with the discomfort. Try din pang ka-adjust ng positions through the night, kasi honestly walang perfect position na forever comfortable at this point, haha, pero ang side-lying talaga ang safest at most restful para sa amin. Pampering yourself din helps, like warm (not hot!) baths or just dimming the lights earlier, para medaling maktulog ang katawan mo.