Ay, ito talaga ang common sa early pregnancy, pero since you're at 9 weeks, mas maganda pang i-check mo sa OB mo para sure lang na okay lang, lalo na kung ang sakit ay sobrang intense o may ibang symptoms. A few of my mum friends had the same aches during those early weeks kasi lumalaki na ang uterus at the ligaments are stretching, pero it's always better to confirm with your doctor para ma-ease ang peace of mind mo!