Eh betul tu, sayang! Placenta position memang boleh berubah especially dalam early pregnancy lagi, so jangan worry sangat kalau sekarang dia positioning rendah. Banyak dari kami jumpa sama thing at 19-20 weeks, tapi by third trimester dia naik sendiri sebab uterus berkembang, it's actually quite common and usually resolves on its own. Tapi sebab ni benda penting untuk monitor, better check with your doc during your next scan to confirm the exact position and make sure everything progressing normally, okay? He/she can explain better based on what they see. Jangan stress, most cases turn out fine!