Salam mama, don't worry lah, banyak cases macam ni yang akhirnya okay je! A few of my mum friends had placenta low-lying at 28 weeks tapi by 32-34 weeks dah naik sendiri sebab uterus terus berkembang, dan baby pun ada masa lagi untuk turn around (especially at 28 weeks lagi awal). Just make sure follow up dengan O&G regularly untuk monitor, dan take it easy jangan angkat berat-berat or do strenuous activity, most pregnancies like yours settle themselves out by third trimester, tapi memang important to see the specialist to track everything closely ya. You're doing the right thing by going to see O&G soon, so just rest assured and let the professionals guide you through this!