Ay, totoo yan, pregnancy backache is super common especially around that time, pero ang severity talaga varies from mama to mama, kaya best talaga to check with your OB just to make sure it's nothing else na kailangan i-monitor. A few of us from my mum group had the same complaint around 5-6 months kasi ang weight distribution na, plus the hormones loosening your joints, so masakit talaga lagi, one of my friends said pregnancy pillows helped a lot, and resting in proper positions (side-lying especially) made a huge difference for her likod pain.