Ay sis, alam ko yan talaga, five months and the back pain is real! A few of us mums experienced something similar, and honestly, it helped to check with our OB first kasi sometimes it can be something that needs proper attention, especially if it's that sharp or affecting how you move. In the meantime, a lot of my mum friends swear by wearing a maternity support belt (game-changer talaga para sa amin), and try to avoid lifting or bending too much, sit down para kumuha ng gamit instead of bending, minsan yan lang ang kailangan talaga. Stretch gently din kung kaya mo, pero definitely consult your doctor agad para ma-rule out kung may iba pang concern, okay?