Ay alam ko yan, mama! That pressure and back pain at almost 38 weeks is totally normal, your baby's head is dropping down na and your pelvis is adjusting, kaya grabe talaga ang discomfort. A few of us moms sa mommy group namin, we just kept walking (pero hindi sobrang intense), did some pelvic stretches, at nag-rest kami ng matagal when needed, pero honestly ang best advice ko is check with your OB kung tumataas pa ung pain o if something feels off, kasi at ganitong stage, better safe na!