Hai! Yes, that's actually quite normal at 27 weeks, the placenta can still move up as your uterus grows, so don't worry too much yet lah. A lot of us moms had low placenta during mid-pregnancy scans, and by the third trimester it shifted higher on its own, so your doctor will just monitor it during your next scans to make sure it moves into a safe position before delivery. Best to ask your doctor about the follow-up timeline and what to watch out for in the meantime, but usually they're not concerned at this stage since there's still time for it to move!