Ay bes, congrats sa first pregnancy! But honestly, this is something you really need to keep talking about with your doctor, placenta position can change as you grow, kaya importante ang follow-up ultrasounds mo para makita kung ano ang mangyayari. A few of my mum friends had similar situations, and ang dami-daming factors talaga na makikita lang ng doctor mo through monitoring, kaya trust the process and don't stress yourself too much in the meantime. Ang best thing you can do is attend all your check-ups, ask your OB anytime may worries ka, at listen sa guidance niya specifically for your case, every pregnancy is different, and only she can guide you properly. You've got this, mama!