Mama, you're so close na! But please call your OB or go to the hospital na to get checked, especially with the pelvic and lower back pain combined with cramping, kailangan nilang i-monitor mo properly para sure na everything's okay with baby. That said, a few of us moms experienced similar discomfort near the end, and it can be normal pre-labor signs, pero since you're at 39+ weeks, really better safe than sorry, your doctor needs to assess kung what stage you're in. Wag mag-worry, you're in good hands once you see them!