Hi mama! Normal yan sa 33 weeks, Braxton Hicks contractions yung paninigas, lalo na pag gabi, at ang back pain with all that extra weight is super common din. A few of us moms were going through the same thing around that time, pero importante talaga na i-mention mo sa OB mo next visit para ma-check kung okay lang lahat, especially kung sobrang sakit na or may discharge. Try sleeping on your left side with a pillow between your knees, and don't worry, you're in the final stretch na!