Aahhh yung back pain na umabot pa sa sides at tummy, sobrang common yan during pregnancy, sis! Pero since yan ang nararamdaman mo and it's affecting you, mas maganda talaga pag-check mo ng OB mo para sure kung normal pregnancy aches lang or may kailangan i-address, kasi bawat pregnancy different and they can give you better peace of mind. One of my mum friends kasi had something similar and turned out she just needed proper posture adjustments and prenatal vitamins, pero importante talaga marinig muna ng doctor!