Hi mama! Normal lang talaga na baby may preferred position, lalo na by 36 weeks, marami sa amin ang nakaranas yan, isa sa mga friends ko ay ganyan din and the baby eventually moved on its own closer to delivery. But yung pain sa gabi, better check with your OB just to be sure, especially if it's getting worse or if you're noticing anything else off, baka positioning lang or maybe you need to adjust how you're sleeping, pero sabe palaging mag-peace of mind tayo sa ganitong stage of pregnancy, kaya best talaga i-confirm with your doctor. Wishing you an easy delivery, mama!