Alam ko yan, mama! Kaya ng marami sa amin yan around this stage ng pregnancy, ang ligaments natin are stretching talaga, so that pulling sensation on both sides ng balakang is pretty common, lalo na pag biglaan ang movements or pag nag-shift ka ng position. Pero since it's coming and going like that at parang nababatak, mas safe pa rin na i-mention mo sa OB mo sa next check-up para ma-rule out kung ano talaga ang cause at ma-ease ang mind mo, first time pregnant kasi talaga might feel scary yung lahat, so better safe than sorry! A few of us moms noticed din na pag nag-rest kami, nag-improve, at pag nag-stretch gently, better din. Ingat lang talaga, at don't hesitate to call your doctor if it gets worse or may discharge na kasama!