Oo normal yan, nangyari din sa akin around that time kaya don't worry too much! But since every pregnancy is different at ang balakang pain ay pwedeng due sa maraming reasons, ligament stretching, hormonal changes, or something else, mas safe na i-mention mo sa OB mo sa next checkup para masiguro lahat okay lang, lalo na if meron pang ibang symptoms like bleeding o spotting.