Uy, back pain during pregnancy is no joke, a few of us mums talked about this and swear by proper posture, wearing a pregnancy support belt, and doing gentle stretches (pero go easy lang!). Ako, I also made sure to sleep on my side with a pillow between my knees, and honestly, that helped a lot more than I expected. Since pregnancy changes your body so much, better check with your OB para makakuha ng proper advice and maybe they can refer you to a physiotherapist if kailangan, they know best what's safe for you and baby. In the meantime, don't carry heavy things and take breaks when you need them, okay?