Ang balakang pain sa early pregnancy is pretty common, lalo na kapag first time mom ka kaya nag-aalala, pero tbh dapat i-report mo sa OB mo para ma-check properly especially kung biglaan siya at medyo intense! A few of us moms experienced something similar around that time, minsan ligament stretching lang, pero kailangan talaga ng doctor's opinion para ma-rule out kung may ibang concern, lalo na kung may spotting or severe cramping pa. Get it checked just to be safe, okay?