Aw mama, knee pain is super common sa third trimester kaya hindi ka nag-iisa! Sa 29 weeks ka na talaga, ang weight gain at ang shifting ng center of gravity mo ay napakalakas mag-cause ng joint pain, especially sa knees at sides ng abdomen. Marami sa mga kaibigan ko na nag-complain din ng ganyan, at nagsimula when they were around your weeks din. Pero since may titigas din sa puson area at persistent ung pain, mas okay na i-check mo with your OB just to be safe, baka need lang ng posture adjustments or maybe other stuff na dapat i-monitor lang. In the meantime, try resting ng matagal, wear supportive shoes, at avoid standing too long if you can. Sending you comfort, mama!