preggy high lying

Ay, grade 3 high-lying placenta means your placenta is mature na (which is normal at 36 weeks) and positioned higher up in the uterus, away from the cervix, so that's actually good news kasi lower risk ng placenta previa. The "high-lying" part is what you want to hear at this stage, honestly, kasi it gives you better chances for normal delivery if everything else checks out. Best pa rin to confirm with your OB kung ano exactly ang setup ng baby and placenta mo, pero ito yung general picture, matured placenta in a safe position, which is what doctors look for near the end.